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Did my textbook make a mistake, or am I just misunderstanding
General Question
Did my textbook make a mistake, or am I just misunderstanding this concept (linear algebra)?
This is not homework; I am studying for an exam.
My textbook has a practice problem: “determine if b is a linear combination of a1, a2, and a3.”
... | {"url":"http://www.fluther.com/150112/did-my-textbook-make-a-mistake-or-am-i-just-misunderstanding/","timestamp":"2014-04-17T16:33:35Z","content_type":null,"content_length":"33540","record_id":"<urn:uuid:b0289e3f-9351-4085-b8e4-a7efba87c20e>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-201404160052... |
Minding the Brain
Has this ever happened to you?
I hate it when the labels on the x-axis overlap, but this can be hard to avoid. I can stretch the figure out, but then the data become farther apart and the space where I want to put the figure
(either in a talk or a paper) may not accommodate that. I've never liked turn... | {"url":"http://mindingthebrain.blogspot.com/","timestamp":"2014-04-16T04:19:53Z","content_type":null,"content_length":"114229","record_id":"<urn:uuid:5148afd8-296f-41f6-8c77-b80ca141358f>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00518-ip-10-147-4-33.ec2.internal.warc.gz"} |
Reference cell in one TAB from another using two criteria
Think your intents were not specified,
ie to do what?? where the dual criteria is met
Try something along these lines, depending on your intents ..
To Count # of instances where the criteria satisfies:
Press ENTER will do
To Sum another corresp named range: Retu... | {"url":"http://www.excelbanter.com/showthread.php?t=153191","timestamp":"2014-04-18T03:00:42Z","content_type":null,"content_length":"55669","record_id":"<urn:uuid:d4f08548-6375-4cad-9db5-d5ea089a7036>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00606-ip-10-147-4-33.ec2.internal.war... |
The Monty Hall Problem
Simple, yet twisted:
Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the
doors, opens another door, say No. 3, which has a goat. He then says to you, "D... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=46835","timestamp":"2014-04-18T06:10:17Z","content_type":null,"content_length":"16857","record_id":"<urn:uuid:a037c41b-614e-4a13-927b-62e0741c5475>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00219-ip-10-147-4-33.ec2.internal.... |
Constraint relaxation may be perfect
Results 1 - 10 of 34
- AI MAGAZINE , 1992
"... A large variety of problems in Artificial Intelligence and other areas of computer science can be viewed as a special case of the constraint satisfaction problem. Some examples are machine
vision, belief maintenance, scheduling, tempora... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=532494","timestamp":"2014-04-19T23:37:47Z","content_type":null,"content_length":"38325","record_id":"<urn:uuid:99c9d7fd-ea3a-43b0-904a-8aa7a87ee243>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00658-ip-10-147-4-33.ec2.internal.war... |
[Numpy-discussion] NaN (Not a Number) occurs in calculation of complex number for Bessel functions
[Numpy-discussion] NaN (Not a Number) occurs in calculation of complex number for Bessel functions
Pauli Virtanen pav@iki...
Fri Dec 21 09:45:40 CST 2012
Your code tries to to evaluate
z = 1263309.3633394379 + 101064.... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2012-December/064877.html","timestamp":"2014-04-16T19:21:03Z","content_type":null,"content_length":"4045","record_id":"<urn:uuid:8a2b4fcc-92a0-4742-809c-a70a60dc4a05>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00171-ip-10-14... |
Venice, CA SAT Math Tutor
Find a Venice, CA SAT Math Tutor
...I am mostly available only on weekends, but can do long hours and some weekday nights as well. I am looking forward to meeting you and helping you achieve your academic goals!Over the course
of 2 years, I have tutored nearly a dozen students in Algebra 1... | {"url":"http://www.purplemath.com/venice_ca_sat_math_tutors.php","timestamp":"2014-04-21T02:32:19Z","content_type":null,"content_length":"23886","record_id":"<urn:uuid:a8409ea7-6ae3-4081-bb1f-5aca5cd4a13b>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00343-ip-10-147-4-33.ec2.interna... |
32.2 Matrices
Home | 18.013A | Chapter 32 Tools Glossary Index Up Previous Next
32.2 Matrices
Matrices provide a convenient way to describe linear equations. Thus if you take the coefficients of your unknowns, in some standard order, as the row elements of your matrix, you define a matrix of
coefficients for any set ... | {"url":"http://ocw.mit.edu/ans7870/18/18.013a/textbook/HTML/chapter32/section02.html","timestamp":"2014-04-19T07:22:28Z","content_type":null,"content_length":"4750","record_id":"<urn:uuid:7590fcfe-b5db-4ca5-8aa6-74cdf320af87>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00519-ip-10-... |
Linear Algebra Tutors
Rancho Palos Verdes, CA 90275
Math and Physics Tutor
...I studied discrete math in high school and performed very well in the course, and continued my study of it throughout university. I have also tutored students in discrete math. I studied
linear algebra
at university, and I enjoyed the class ... | {"url":"http://www.wyzant.com/Hawthorne_CA_Linear_Algebra_tutors.aspx","timestamp":"2014-04-24T23:12:59Z","content_type":null,"content_length":"61392","record_id":"<urn:uuid:dd776b11-9467-472a-8b56-1dc4d2389984>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00211-ip-10-147-4-33.ec2.in... |
arithmetic, strings
If a number is divisible by 3, return "Fizz". If a number is divisible by 5, return "Buzz". If a number is divisible by 3 and 5, return "FizzBuzz"
def fizzbuzz(x)
assert_equal fizzbuzz(3), "Fizz"
assert_equal fizzbuzz(50), "Buzz"
assert_equal fizzbuzz(15), "FizzBuzz"
assert_equal fizzbuzz(5175), "Fi... | {"url":"http://www.rubeque.com/problems/fizzbuzz?solution_code=case+x%0D%0Awhen+3+then+%22Fizz%22%0D%0Awhen+50+then+%22Buzz%22%0D%0Awhen+15+then+%22FizzBuzz%22%0D%0Awhen+5175+then+%22FizzBuzz%22%0D%0Aend","timestamp":"2014-04-19T17:01:37Z","content_type":null,"content_length":"6216","record_id":"<urn:uuid:a407f943-1430... |
Help!!!!!!!! What Am I Doing Wrong????
05-19-2002 #1
Registered User
Join Date
May 2002
I been working on these two projects forever and I have to turn them in tomorrow. I keep receiving errors and now I'm out of answers. One project I received help from someone, but my teacher said
the coding was wrong. Pl... | {"url":"http://cboard.cprogramming.com/cplusplus-programming/18072-help-what-am-i-doing-wrong.html","timestamp":"2014-04-17T05:25:45Z","content_type":null,"content_length":"67014","record_id":"<urn:uuid:587781bd-67fd-41e6-8aa7-98afdd7fc23d>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-201404160052... |
Algebra and algorithms for the classification of differential invariants
Seminar Room 1, Newton Institute
For a Lie group action known by its infinitesimals three practical descriptions of the differential algebra of differential invariants are given by generators and syzygies. The syzygies form a
formally integrable s... | {"url":"http://www.newton.ac.uk/programmes/DIS/seminars/2009062915301.html","timestamp":"2014-04-17T09:47:40Z","content_type":null,"content_length":"7373","record_id":"<urn:uuid:036ff4f5-e34a-44b5-9f53-b57d765aff6c>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00561-ip-10-147-4-33.e... |
Number of results: 267
Anna and Jamie were at track practive. The track is 2/5 kilometers around. Anna ran 1 lap in 2 minutes. How many minutes does it take Anna to run one kilometer?
Monday, December 3, 2012 at 1:00pm by Liam
Anna and bob play a game in which Anna begins by rolling a fair dice, after which bob tosses ... | {"url":"http://www.jiskha.com/search/index.cgi?query=anna","timestamp":"2014-04-20T21:54:56Z","content_type":null,"content_length":"32282","record_id":"<urn:uuid:483d8359-0f6f-49bd-9143-5d9620719223>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00590-ip-10-147-4-33.ec2.internal.warc... |
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Given a cube ABCD.EFGH with the length of each edge is 4 cm. W... | {"url":"http://openstudy.com/updates/5133204fe4b0034bc1d7b20b","timestamp":"2014-04-16T04:30:24Z","content_type":null,"content_length":"92578","record_id":"<urn:uuid:bd303128-cb96-47fd-bdb0-920b8c85a7f1>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00600-ip-10-147-4-33.ec2.internal.... |
Results 1 - 10 of 70
, 2004
"... Elliptic curves have been intensively studied in number theory and algebraic geometry for over 100 years and there is an enormous amount of literature on the subject. To quote the mathematician
Serge Lang: It is possible to write endlessly on elliptic curves. (This is not a threat.) Ell... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=170392","timestamp":"2014-04-19T13:51:39Z","content_type":null,"content_length":"37281","record_id":"<urn:uuid:6645e63b-7eda-4b20-a645-0f9ca8f72f12>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00281-ip-10-147-4-33.ec2.internal.war... |
Infinite electrical networks and possible connections with LERW
up vote 6 down vote favorite
I've been exposed to various problems involving infinite circuits but never seen an extensive treatment on the subject. The main problem I am referring to is
Given a lattice L, we turn it into a circuit by placing a unit re... | {"url":"http://mathoverflow.net/questions/13649/infinite-electrical-networks-and-possible-connections-with-lerw","timestamp":"2014-04-17T07:25:52Z","content_type":null,"content_length":"62622","record_id":"<urn:uuid:5cb628a4-655e-4bb1-8321-d233926fc23d>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN... |
Maxime Bergeron
Future talks
The topology of nilpotent character varieties, GEometric structures And Representation varieties Junior Retreat, University of Michigan at Ann Arbor, May 2014.
Low dimensional topology and geometric group theory session, Canadian Mathematical Society Summer Meeting, Winnipeg, June 2014.
Sym... | {"url":"http://www.math.ubc.ca/~mbergeron/seminars.html","timestamp":"2014-04-18T18:12:24Z","content_type":null,"content_length":"5658","record_id":"<urn:uuid:8dd80a2d-25e0-4b44-81e4-7681ddf8c776>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00294-ip-10-147-4-33.ec2.internal.warc.gz"... |
Maplewood, NJ Algebra Tutor
Find a Maplewood, NJ Algebra Tutor
...I've also used discrete mathematics in computer science courses for understanding the ways of dealing with integer computation. I've been a C++ developer for over 4 years, working on a
financial services application. I have programmed in both objecti... | {"url":"http://www.purplemath.com/maplewood_nj_algebra_tutors.php","timestamp":"2014-04-17T13:30:08Z","content_type":null,"content_length":"24152","record_id":"<urn:uuid:d126c0be-f8e1-45f8-96ba-6e2b6c05b3aa>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00524-ip-10-147-4-33.ec2.inter... |
Bel Tiburon, CA Algebra 1 Tutor
Find a Bel Tiburon, CA Algebra 1 Tutor
...I enjoyed helping my classmates with their challenges as math has always been one of my favorite subjects, and I continued to help my classmates during my free time in college. Now I am happy
to become a professional tutor so I can help more ... | {"url":"http://www.purplemath.com/Bel_Tiburon_CA_algebra_1_tutors.php","timestamp":"2014-04-17T10:51:32Z","content_type":null,"content_length":"24431","record_id":"<urn:uuid:ef042cad-92f5-43d2-8eac-3891ac72873e>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00057-ip-10-147-4-33.ec2.i... |
Basketball Teams as Strategic Networks
We asked how team dynamics can be captured in relation to function by considering games in the first round of the NBA 2010 play-offs as networks. Defining players as nodes and ball movements as
links, we analyzed the network properties of degree centrality, clustering, entropy and... | {"url":"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0047445","timestamp":"2014-04-19T04:31:30Z","content_type":null,"content_length":"135245","record_id":"<urn:uuid:76c84795-1abe-4601-8160-9c4ea653275e>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00526-ip-10-147-4-... |
Homework 3
Classification for Leukemia Expression Profiles
Due Date: Friday, April 23 (11:59pm) Submit electronically via Courseworks, following the instructions posted previously by our head TA Eugene Ie (eie@cs.columbia.edu). For theory quest... | {"url":"http://www.cs.columbia.edu/~cleslie/cs4761/spr04-hw3/spr04-homework3.html","timestamp":"2014-04-21T02:01:10Z","content_type":null,"content_length":"12677","record_id":"<urn:uuid:cf897632-6eea-416d-83d7-83db705bd7f0>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00661-ip-10-147... |
Lafayette, CO Science Tutor
Find a Lafayette, CO Science Tutor
...Science is my very favorite to teach and share my excitement for. Reading: I love teaching reading! Whether your student is starting out, or just having troubles getting the knack of it,
breaking it down into very small pieces is incredibly helpful a... | {"url":"http://www.purplemath.com/lafayette_co_science_tutors.php","timestamp":"2014-04-19T07:03:55Z","content_type":null,"content_length":"24014","record_id":"<urn:uuid:a16c3535-c07e-48d1-b8c9-1f7dedf38def>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00439-ip-10-147-4-33.ec2.intern... |
About local refinement of tetrahedral grids based on local bisection, 5th International Meshing Roundtable
, 2000
"... Multi-resolution data-structures and algorithms are key in Visualization to achieve real-time interaction with large data-sets. Research has been primarily focused on the off-line construction
of such ... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=209189","timestamp":"2014-04-18T12:18:37Z","content_type":null,"content_length":"24162","record_id":"<urn:uuid:b00d0757-776d-4aa7-b2e7-3de2a9f9f476>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00374-ip-10-147-4-33.ec2.internal.war... |
Spring Algebra 1 Tutor
...I began tutoring three years ago, and I absolutely love it. I help high school and college students with topics that range anywhere from algebra I to calculus II and chemistry. I can also help
with CLEP test preparation.
7 Subjects: including algebra 1, chemistry, biology, algebra 2
He... | {"url":"http://www.purplemath.com/Spring_algebra_1_tutors.php","timestamp":"2014-04-18T23:37:21Z","content_type":null,"content_length":"23662","record_id":"<urn:uuid:eaf5eb52-0617-4696-9ebe-346e1b22cc4e>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00638-ip-10-147-4-33.ec2.internal.w... |
Proof involving the Archimedean property.
September 5th 2010, 04:38 PM
Proof involving the Archimedean property.
Given any x $\in$R prove that there exists a unique n $\in$Z such that n - 1 $\leq$ x < n.
Proof: Suppose x $\in$R. By the Archimedean property, there is an n $\in$Z such that n > x. Since N is well-... | {"url":"http://mathhelpforum.com/differential-geometry/155288-proof-involving-archimedean-property-print.html","timestamp":"2014-04-18T23:37:17Z","content_type":null,"content_length":"13170","record_id":"<urn:uuid:972256dd-9ed2-47d7-b1fb-7d78f28dee92>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20... |
alternating series test
November 10th 2009, 08:24 PM #1
Junior Member
Mar 2008
alternating series test
Hi all,
I was wondering for the following series:
$<br /> \sum_{n=1}^{\infty}\frac{(-1)^(n-1)(-1)^n}{n}<br />$
NOTE: in the numerator it is meant to be (-1)^(n-1) times by (-1)^n .... sorry i can't... | {"url":"http://mathhelpforum.com/calculus/113793-alternating-series-test.html","timestamp":"2014-04-23T12:56:14Z","content_type":null,"content_length":"34934","record_id":"<urn:uuid:8028b48a-7324-4ada-80b8-81f29056e02e>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00286-ip-10-147-4-... |
Texas Instruments TI-34 Ii Explorer Plus
Preview of first few manual pages (at low quality). Check before download. Click to enlarge.
Download (English) Related manuals
Texas Instruments TI-34 Ii Explorer Plus, size: 3.0 MB Texas Instruments TI-34 Ii Explorer Plus Quick Referen... | {"url":"http://www.ps2netdrivers.net/manual/texas.instruments.ti-34.ii.explorer.plus/","timestamp":"2014-04-17T12:35:51Z","content_type":null,"content_length":"53187","record_id":"<urn:uuid:beedebcc-93ec-4808-9c29-68d88a234ed3>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00650-ip-10... |
Solvable and Unsolvable Problems
- JOURNAL OF THE ACM , 1974
"... An attempt is made to apply information-theoretic computational complexity to metamathematics. The paper studies the number of bits of instructions that must be a given to a computer for it to
perform finite and infinite tasks, and also the amount of tim... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=3228911","timestamp":"2014-04-25T03:30:27Z","content_type":null,"content_length":"14434","record_id":"<urn:uuid:73b68209-e976-4e0c-873c-b13e598c2ebd>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00381-ip-10-147-4-33.ec2.internal.wa... |
trig problem ...
November 7th 2009, 03:32 PM #1
Nov 2009
trig problem ...
hey all
i don't really know how to write this,
so here is a picture of the problem.
can u please help me ?
hint ...
$1+\tan^2{x} = \sec^2{x}$
first of all TY
but i don't know this field ... its for a friend, ca... | {"url":"http://mathhelpforum.com/trigonometry/113040-trig-problem.html","timestamp":"2014-04-19T20:48:45Z","content_type":null,"content_length":"45465","record_id":"<urn:uuid:d06e9701-0b73-4f54-b902-148322e4297d>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00506-ip-10-147-4-33.ec2.... |
descent for simplicial presheaves
Simplicial presheaves equipped with the model structure on simplicial presheaves are one model/presentation for the (∞,1)-category of (∞,1)-sheaves on a given site.
The fibrant object $\bar X$ that a simplicial presheaf $X : S^{op} \to SSet$ is weakly equivalent to with respect to this... | {"url":"http://www.ncatlab.org/nlab/show/descent+for+simplicial+presheaves","timestamp":"2014-04-19T05:02:34Z","content_type":null,"content_length":"62161","record_id":"<urn:uuid:fd994a2c-fa63-4d20-aac5-24de3e95f5b1>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00251-ip-10-147-4-33.e... |
0 (year)
Year zero does not exist in the Anno Domini system usually used to number years in the Gregorian calendar and in its predecessor, the Julian calendar. In this system, the year 1 BC is followed by AD
1. However, there is a year zero in astronomical year numbering (where it coincides with the Julian year 1 BC) a... | {"url":"http://blekko.com/wiki/Year_zero?source=672620ff","timestamp":"2014-04-18T09:23:53Z","content_type":null,"content_length":"56354","record_id":"<urn:uuid:8452637f-1802-4ab0-bb32-d7d0e8ab5bf6>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005213-00384-ip-10-147-4-33.ec2.internal.warc.... |
North Bergen Precalculus Tutor
...Prior to that, I taught my robotics teams to create 3D-animations for competitions using Maya and 3D-Studio Max. I'm also proficient with GNU 3D programs such as Blender. I've been teaching
math including linear algebra for 10 years.
83 Subjects: including precalculus, chemistry,... | {"url":"http://www.purplemath.com/North_Bergen_Precalculus_tutors.php","timestamp":"2014-04-17T19:50:32Z","content_type":null,"content_length":"24432","record_id":"<urn:uuid:3a32f40b-b7b5-45d6-b792-868d79b146c2>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00309-ip-10-147-4-33.ec2.i... |
Math Month in the Library
This article by Carol Otis Hurst first appeared in
Teaching K-8 Magazine
If your math skills are as weak as mine, it will come to a shock of the entire faculty when you announce that this month is Math Month in the library.
Start with a bulletin board based on How Much Is a Million? by David M... | {"url":"http://www.carolhurst.com/subjects/math/librarymath.html","timestamp":"2014-04-20T05:43:32Z","content_type":null,"content_length":"32375","record_id":"<urn:uuid:9e43261c-7ec3-44ee-aab9-a3e27d086262>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00268-ip-10-147-4-33.ec2.intern... |
Spare me the math: the Lamb Shift
April 24, 2013
To kick off SMTM, I’ll look at a topic that I never really understood when I was in graduate school: the Lamb shift.
The Lamb Shift: what it is
In its most commonly-discussed form, the Lamb shift is a small effect. In fact, it’s a very small effect (which is probably wh... | {"url":"http://gravityandlevity.wordpress.com/2013/04/24/the-lamb-shift/","timestamp":"2014-04-21T12:19:19Z","content_type":null,"content_length":"99874","record_id":"<urn:uuid:f74146f0-0a15-419d-9074-c35f7133e8dd>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MAIN-20140416005219-00521-ip-10-147-4-33.ec... |
This concise and practical text describes the major educational computer applications and provides methods for using computer tools effectively in the teaching/learning process.
The author focuses on the word processor, database, spreadsheet, Internet, and hypermedia software–tools that all classrooms with computers ha... | {"url":"http://www.mypearsonstore.com/bookstore/tech-tactics-technology-for-teachers-coursesmart-etextbook-013714489X","timestamp":"2014-04-19T09:30:43Z","content_type":null,"content_length":"37625","record_id":"<urn:uuid:3ec0b811-3ee1-4380-a1c6-215b18c5234a>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/C... |
Mass, Density, And Volume (what units?)
May 14th 2011, 07:21 AM #1
Apr 2011
Mass, Density, And Volume (what units?)
Volume = 45 cubic meters
Density = 1900 kg/cubic meters
Mass = (45)(1900) = 85500
is the unit in kilograms?
because in this site> DENSITY
it says tons. i'm confused.
Volume... | {"url":"http://mathhelpforum.com/math-topics/180525-mass-density-volume-what-units.html","timestamp":"2014-04-18T15:16:48Z","content_type":null,"content_length":"43267","record_id":"<urn:uuid:4175e265-1011-4713-8059-a1ffeecd7d99>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00451-ip... |
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Topic: Reduce the number of fminsearch iterations
Replies: 2 Last Post: Oct 30, 2013 9:37 AM
Messages: ... | {"url":"http://mathforum.org/kb/message.jspa?messageID=9314607","timestamp":"2014-04-17T13:38:01Z","content_type":null,"content_length":"18962","record_id":"<urn:uuid:a001ed8c-35d5-4985-bcb8-6461ef70ec10>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00558-ip-10-147-4-33.ec2.internal.... |
THE METHODS OF CALCULATION OF ELLIPSOIDAL POLYGONS AREAS BASED ON SOME MAP PROJECTIONS PROPERTIES
P. Pedzich, J. Balcerzak
Warsaw University of Technology, Department of Geodesy and Cartograp... | {"url":"http://icaci.org/files/documents/ICC_proceedings/ICC2007/abstracts/html/2_Oral2_3_THE%20METHODS%20OF%20CALCULATION%20OF%20ELLIPSOIDAL%20POLYGONS%20AREAS.htm","timestamp":"2014-04-21T09:39:28Z","content_type":null,"content_length":"9258","record_id":"<urn:uuid:2bb8f4f3-3709-4414-8df4-027077641852>","cc-path":"CC... |
A 3*3 matrix space problem
up vote 1 down vote favorite
A matrix subspace $S\subset M_n(C)$ is called "good", if there is two linear independent elements of $S$, says $E_1,E_2$ which are simultaneously singular valued decomposable, i.e., $E_1=UD_1V$ and
$E_2=UD_2V$ with $D_1$, $D_2$ diagonal and $U,V$ unitary.
Now the ... | {"url":"http://mathoverflow.net/questions/45147/a-33-matrix-space-problem?sort=oldest","timestamp":"2014-04-17T09:59:49Z","content_type":null,"content_length":"56187","record_id":"<urn:uuid:5203ace6-c6d7-45a2-b00e-77e03ddc3538>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00025-ip-1... |
Can you figure out how many squares are in this picture? [Image]
If you counted 27… you’d be wrong.
[via Facebook]
36 comments
For anyone that hasn’t figured it out yet, the answer is 40.
[@Unicorn02] What a great animation, it makes it clear. Also proves me right! ;-)
Frig, just saw another 2 squares I pre... | {"url":"http://dottech.org/125485/can-figure-many-squares-picture-image/","timestamp":"2014-04-16T11:22:14Z","content_type":null,"content_length":"127348","record_id":"<urn:uuid:f1d903a2-2cd4-44b5-9c24-730fcb7290cd>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00099-ip-10-147-4-33.e... |
3D Plots in R
February 13, 2014
By Joseph Rickert
by Joseph Rickert
Recently, I was trying to remember how to make a 3D scatter plot in R when it occurred to me that the documentation on how to do this is scattered all over the place. Hence, this short organizational
note that you may find useful.
First of all, for the... | {"url":"http://www.r-bloggers.com/3d-plots-in-r/","timestamp":"2014-04-16T07:43:36Z","content_type":null,"content_length":"45766","record_id":"<urn:uuid:6a329b21-6771-4f56-94b0-b019b5b48b29>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MAIN-20140416005201-00110-ip-10-147-4-33.ec2.internal.warc.gz"} |
Order, Chaos,and the End of Reductionism
The author presents a case against reductionism based on the emergence of chaos and order from underlying non-linear processes. Since all theories are mathematical, and based on an underlying premise
The author presents a case against reductionism based on the emergence of chaos... | {"url":"http://www.slideshare.net/John47Wind/order-chaosand-the-end-of-reductionism","timestamp":"2014-04-20T01:30:41Z","content_type":null,"content_length":"259303","record_id":"<urn:uuid:73c6068e-1871-4f5a-b565-651568bb34f2>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00448-ip-10-... |
Debojyoti Ghosh
These are some codes that I am developing as a part of my research. They are mostly written in C and require only the GNU C compiler (and MPICH). Some versions may require PETSc. Compiling them is
pretty straightforward. I use Git for source code management and maintain a copy of my repositories on Bitb... | {"url":"http://www.mcs.anl.gov/~ghosh/misc.html","timestamp":"2014-04-21T12:50:57Z","content_type":null,"content_length":"7758","record_id":"<urn:uuid:23c8a0d4-d810-4388-8b34-409addb47513>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MAIN-20140416005219-00100-ip-10-147-4-33.ec2.internal.warc.gz"} |
Distance from point to plane
1. 199605
Distance from point to plane
See attached page for the rest of the question
Let P be a point not on the plane that passes through the points Q, R, and S. Show that the distance d from P to the plane is....
This provides an example of finding the difference between a point and a p... | {"url":"https://brainmass.com/math/geometry-and-topology/199605","timestamp":"2014-04-19T01:48:32Z","content_type":null,"content_length":"28306","record_id":"<urn:uuid:87efbe80-d373-41aa-a39b-2fe02bd1e247>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00246-ip-10-147-4-33.ec2.interna... |
Numbers Please: Economic Data
The Economist's Toolbox
Numbers Please: Economic Data
In the business press, you will read economic data. Often these data are called economic indicators because they indicate the level of activity or future activity in some area of the economy. I will
explain economic data and indicators ... | {"url":"http://www.infoplease.com/cig/economics/numbers-please-economic-data.html","timestamp":"2014-04-21T16:48:21Z","content_type":null,"content_length":"45668","record_id":"<urn:uuid:4fa074ea-2b67-4a0e-98c9-fb7d0df98b7b>","cc-path":"CC-MAIN-2014-15/segments/1397609540626.47/warc/CC-MAIN-20140416005220-00140-ip-10-14... |
W. Kahan's
Ph.D. (Math., University of Toronto, 1958)
Professor Emeritus of Mathematics, and of E.E. & Computer Science
863 Evans Hall (Math), and 513 Soda Hall (CS)
Now that I am "retired", I work in my
offices sporadically at least once or
twice a week during each semester.
Phone: (510) 642-5638 (rings in both off... | {"url":"http://www.eecs.berkeley.edu/~wkahan/","timestamp":"2014-04-20T10:48:06Z","content_type":null,"content_length":"14272","record_id":"<urn:uuid:bd379267-fedc-451e-b316-33e36d149bb2>","cc-path":"CC-MAIN-2014-15/segments/1397609538423.10/warc/CC-MAIN-20140416005218-00115-ip-10-147-4-33.ec2.internal.warc.gz"} |
Economics in Plain English
Mar 23 2012
What makes oligopolistic markets, which are characterized by a few large firms, so different from the other market structures we study in Microeconomics? Unlike in more competitive markets in which
firms are of much smaller size and one firm’s behavior has little or no effect on i... | {"url":"http://welkerswikinomics.com/blog/category/profit-maximization/","timestamp":"2014-04-16T10:52:09Z","content_type":null,"content_length":"162804","record_id":"<urn:uuid:7356afba-a1b5-47a6-914c-a5a8a4a5b9d3>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00253-ip-10-147-4-33.ec... |
Next | Prev | Up | Top | Index | JOS Index | JOS Pubs | JOS Home | Search
Thiran Allpass Interpolators
Given a desired delay allpass filter
can be designed having maximally flat group delay equal to dc using the formula
denotes the binomial coefficient. Note, incidentally, that a lowpass filter having maximally flat gr... | {"url":"https://ccrma.stanford.edu/~jos/waveguide/Thiran_Allpass_Interpolators.html","timestamp":"2014-04-17T06:32:16Z","content_type":null,"content_length":"11762","record_id":"<urn:uuid:4bb3461a-83cb-4f02-9bff-adb40b058978>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00410-ip-10-... |
Lambda Expression in C# 3.0
Lambda Expression is the one of the best feature of the C# 3.0. Lambda expression is same as anonymous method introduced in C# 2.0. Lambda Expression is a concise syntax to achieve the same goal as
anonymous method. Now we can summarize Lambda expression in one line.
“Lambda expression is ... | {"url":"http://shakeel-dot-net.blogspot.com/2010/02/lambda-expression-in-c-30.html","timestamp":"2014-04-17T01:04:14Z","content_type":null,"content_length":"62371","record_id":"<urn:uuid:094154dd-3659-4261-958f-4c624841d5a3>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00518-ip-10-14... |
Herons' Formula
I expanded the equation for area by eliminating the s and just using a, b, and c, however, I must have made a mistake because when I enter the a=3, b=4, c=5 famous triangle for the sides, I don't get
1.5 like the original formula.
Infact, my square root goes negative inside, so a big boo-boo.
Here is my... | {"url":"http://www.mathisfunforum.com/viewtopic.php?pid=36095","timestamp":"2014-04-21T07:25:52Z","content_type":null,"content_length":"14178","record_id":"<urn:uuid:1fb06495-32bd-4c3a-9153-dc64284fe53a>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00124-ip-10-147-4-33.ec2.internal.... |
6 search hits
Distance phenomena in high-dimensional chemical descriptor spaces : consequences for similarity-based approaches (2009)
Matthias Rupp Gisbert Schneider
DOGS: reaction-driven de novo design of bioactive compounds (2012)
Markus Hartenfeller Heiko Zettl Miriam Walter Matthias Rupp Felix Reisen Ewgenij Prosch... | {"url":"http://publikationen.ub.uni-frankfurt.de/solrsearch/index/search/searchtype/authorsearch/author/%22Gisbert+Schneider%22/start/0/rows/10/author_facetfq/Matthias+Rupp/sortfield/title/sortorder/asc","timestamp":"2014-04-19T10:06:53Z","content_type":null,"content_length":"41831","record_id":"<urn:uuid:9d1c8256-39ad... |
I am a mathematician/computer scientist working at the UW Institute for Health Metrics and Evaluation, where I am applying ideas from random structures and complex networks to challenges in global
• Segregation in social networks, Oct. 5-7, 2007 (part of Opportunities for Undergraduate Research in Computer Science wo... | {"url":"http://www.math.cmu.edu/~adf/","timestamp":"2014-04-21T04:32:20Z","content_type":null,"content_length":"3613","record_id":"<urn:uuid:a2330a02-7614-40a9-a435-a898f48717bd>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-20140416005219-00600-ip-10-147-4-33.ec2.internal.warc.gz"} |
the first resource for mathematics
Singular integral operators. Extended and partly modified translation from the German by Albrecht Böttcher and Reinhard Lehmann.
(English) Zbl 0612.47024
Berlin etc.: Springer-Verlag. 528 p. DM 98.00 (Orig. Akademie-Verlag, Berlin) (1986).
The book is translated with some modification... | {"url":"http://zbmath.org/?q=an:0612.47024&format=complete","timestamp":"2014-04-16T19:27:45Z","content_type":null,"content_length":"22992","record_id":"<urn:uuid:b57010d3-edc6-4112-9798-c73426797378>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00059-ip-10-147-4-33.ec2.internal.war... |
Physics Forums - limit question
- -
limit question
vabamyyr Sep26-06 10:47 AM
limit question
I have a question:
what is lim (n--->infinity)= 1/(3+(-1)^n))? My opinion that this limit does not exist.
arildno Sep26-06 10:50 AM
"Do not opine, PROVE!"
Apocryphal quote from Euclid. :smile:
CRGreathouse Sep26-06 11:44 ... | {"url":"http://www.physicsforums.com/printthread.php?t=133664","timestamp":"2014-04-20T14:18:17Z","content_type":null,"content_length":"8916","record_id":"<urn:uuid:1cf627b6-d1d0-4286-bce7-d34f9d464de5>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00637-ip-10-147-4-33.ec2.internal.w... |
How Much Bias Binding Can You Cut From A Square Of Fabric
If you have been frustrated in the past trying to figure out how much bias you need and how much fabric you need for it, here is a simple formula to help you determine just how much bias you can cut
from a square of fabric no matter what width of bias you want.
... | {"url":"http://sew-whats-new.com/profiles/blogs/how-much-bias-binding-can-you","timestamp":"2014-04-19T09:43:02Z","content_type":null,"content_length":"68786","record_id":"<urn:uuid:3953905e-9e4d-4ce8-ab7b-07c04cd5b582>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00625-ip-10-147-4-... |
The Exclusive Or
This is the final weekend of the Edinburgh Fringe Festival, an enormous and insane annual event which draws around half a million people to a city of around half a million people. Walking round the
city this week, I thought of a game to pass the time when stuck in a Festival crowd.
The game is called "... | {"url":"http://www.theexclusive.org/2012_08_01_archive.html","timestamp":"2014-04-18T03:06:24Z","content_type":null,"content_length":"89597","record_id":"<urn:uuid:ff448d32-d3bd-45a7-9cc9-5cb214c70b61>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00386-ip-10-147-4-33.ec2.internal.war... |
log rule for integration confusion
July 15th 2011, 08:17 AM
log rule for integration confusion
If I have a function:
f(x) = 1 / (x+1), and I want to find it's indefinite integral, I can apply the log rule and get:
F(x) = ln |x+1| + C
If, however, I multiply both the numerator and the denominator by 2, b... | {"url":"http://mathhelpforum.com/calculus/184604-log-rule-integration-confusion-print.html","timestamp":"2014-04-20T00:30:54Z","content_type":null,"content_length":"9033","record_id":"<urn:uuid:08a70160-49fa-498e-8c55-c268b586b731>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00516-... |
Mathematics Professor Trying To Teach at Junior High School
Mathematical education and the role of mathematicians in mathematical education is a very important, loaded, and controversial subject. An old friend and fellow combinatorialist Ron Aharoni tried to
teach mathematics at a junior high school. Here is Ron’s acco... | {"url":"http://gilkalai.wordpress.com/2010/01/01/mathematics-professor-trying-to-teach-at-junior-high-school/","timestamp":"2014-04-21T05:16:47Z","content_type":null,"content_length":"116624","record_id":"<urn:uuid:95a9d7c3-ed53-4e55-9644-329409c9ad2b>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-... |
autocorrelation in excel
- [S::S] [S:aueyosae('o'); :S]
autocorrelation in excel
examine the autocorrelation function for each variable by clicking in eviews on view the excel puter practical contains a dataset with monthly data on us. introductory understanding of excel petence
with windows operating systems first-ord... | {"url":"http://www.biodanzagp.com.br/masala-s1b/matede.html","timestamp":"2014-04-20T21:38:23Z","content_type":null,"content_length":"11016","record_id":"<urn:uuid:7fdbfc41-ea62-43c9-8f5d-eea421a85299>","cc-path":"CC-MAIN-2014-15/segments/1397609539230.18/warc/CC-MAIN-20140416005219-00551-ip-10-147-4-33.ec2.internal.wa... |
Colson, John
- The fifth Lucasian Professor of Mathematics at Cambridge University, is a relative unknown in the history of the field.
- Before Colson came to Cambridge, he had been the master at a mathematical school at Rochester. He was first educated at Christ Church Oxford, but never graduated.
1713 - He was electe... | {"url":"http://www.s9.com/Biography/Print/Colson-John","timestamp":"2014-04-21T12:19:04Z","content_type":null,"content_length":"3789","record_id":"<urn:uuid:a4f6ebd2-6c51-408c-886b-37c15c41c356>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MAIN-20140416005219-00562-ip-10-147-4-33.ec2.internal.warc.gz"} |
Card Shuffling I
Just about anyone interested in mathematics has studied a little probability and probably done some easy analysis of basic card games and dice games. Completely off topic for a second, am I the only
one who has noticed that basic probability homework exercises are the only situation, aside from funeral... | {"url":"http://cornellmath.wordpress.com/2009/04/19/card-shuffling-i/","timestamp":"2014-04-21T02:02:30Z","content_type":null,"content_length":"65315","record_id":"<urn:uuid:b0f29d04-103f-44d7-9245-f6b7031f828c>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00659-ip-10-147-4-33.ec2.in... |
Convert degree to arcsecond - Conversion of Measurement Units
›› Convert degree to arcsecond
›› More information from the unit converter
How many degree in 1 arcsecond? The answer is 0.000277777777778.
We assume you are converting between degree and arcsecond.
You can view more details on each measurement unit:
degree ... | {"url":"http://www.convertunits.com/from/degree/to/arcsecond","timestamp":"2014-04-20T20:56:48Z","content_type":null,"content_length":"20551","record_id":"<urn:uuid:dfd33508-0048-4431-b2f5-7531d5039d94>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00248-ip-10-147-4-33.ec2.internal.w... |
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Here's the question you clicked on:
the midpoint formula is?
• one year ago
• one year ago
You... | {"url":"http://openstudy.com/updates/5109855ee4b0d9aa3c462c3c","timestamp":"2014-04-25T08:34:31Z","content_type":null,"content_length":"56201","record_id":"<urn:uuid:c507cbef-7fa3-4677-bd9d-2258540ac66b>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00586-ip-10-147-4-33.ec2.internal.... |
Normal Approximation to Binomial
The Rice Virtual Lab in Statistics has a more recent version of this applet.
In this demonstration you specify the number of events (N) and the probability of success for any one event (p) and push the "OK" button. The initial graph shows the probability distribution
associated with fli... | {"url":"http://www.ruf.rice.edu/~lane/stat_sim/binom_demo.html","timestamp":"2014-04-17T01:05:46Z","content_type":null,"content_length":"2132","record_id":"<urn:uuid:b745e194-0ec0-4b69-8cd3-012a3fd6855b>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00337-ip-10-147-4-33.ec2.internal.w... |
Q&A: Three Functions for Computing Derivatives
Mathematica Q&A: Three Functions for Computing Derivatives
May 20, 2011 — Andrew Moylan, Technical Communication & Strategy
Got questions about Mathematica? The Wolfram Blog has answers! We’ll regularly answer selected questions from users around the web. You can submit yo... | {"url":"http://blog.wolfram.com/2011/05/20/mathematica-qa-three-functions-for-computing-derivatives/","timestamp":"2014-04-19T09:25:13Z","content_type":null,"content_length":"71457","record_id":"<urn:uuid:6732d8f7-3f56-4ed0-b3d1-caf3e0d08489>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-2014041600... |
An Overview of λProlog
Results 11 - 20 of 68
- In Eighth International Logic Programming Conference , 1991
"... The unification of simply typed λ-terms modulo the rules of β- and η-conversions is often called “higher-order ” unification because of the possible presence of variables of functional type.
This kind of unif... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=484521&sort=cite&start=10","timestamp":"2014-04-17T07:27:56Z","content_type":null,"content_length":"39787","record_id":"<urn:uuid:8af34609-ff1a-4f63-ac36-d81efc6ba4ec>","cc-path":"CC-MAIN-2014-15/segments/1397609526311.33/warc/CC-MAIN-20140416005206-00525-ip-10-147-4-... |
FOM: Intuition, Logic, and Induction.
Alexander Zenkin alexzen at com2com.ru
Tue Mar 9 20:39:56 EST 1999
Charles Silver (in particular) wrote (RE: FOM: Intuition, Logic, and
Induction. Tue, 9 Mar 1999 10:18:18) to Paul Prueitt:
> I ... did not understand Alexander Zenkin's EA Theorem.
> I still do not understand his p... | {"url":"http://www.cs.nyu.edu/pipermail/fom/1999-March/002777.html","timestamp":"2014-04-18T14:01:05Z","content_type":null,"content_length":"13538","record_id":"<urn:uuid:7e5005c1-b826-407c-a597-9652e4832c42>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00405-ip-10-147-4-33.ec2.inte... |
Two Trips to Gorilla Land and the Cataracts of the Congo Volume 2 (9781153729727) Richard Francis Burton
Product Details:
Paperback: 138 pages
Publisher: General Books LLC (March 7, 2010)
Language: English
ISBN-10: 1153729725
ISBN-13: 978-1153729727
Product Dimensions:
9.1 x 5.9 x 0.4 inches
Shipping Weight: 8 ounces (... | {"url":"http://polyrbearlithfe.blog.com/2012/03/28/two-trips-to-gorilla-land-and-the-cataracts-of-the-congo-volume-2-9781153729727-richard-francis-burton/","timestamp":"2014-04-20T18:32:31Z","content_type":null,"content_length":"36204","record_id":"<urn:uuid:b102c5dc-5f2a-4407-bf7e-e1b0e0a4b4b4>","cc-path":"CC-MAIN-201... |
[SI-LIST] : ESR and Bypass Caps, revisited and re
[SI-LIST] : ESR and Bypass Caps, revisited and revised
From: Doug Brooks (doug@eskimo.com)
Date: Mon Feb 21 2000 - 15:12:59 PST
About three weeks ago I called everyone's attention to an article we had
written about ESR and Bypass Cap selection. After considerable discus... | {"url":"http://www.qsl.net/wb6tpu/si-list4/0593.html","timestamp":"2014-04-17T15:29:42Z","content_type":null,"content_length":"7129","record_id":"<urn:uuid:0d9c829c-c19d-4cf5-9fc6-993e49c3bf3f>","cc-path":"CC-MAIN-2014-15/segments/1398223203235.2/warc/CC-MAIN-20140423032003-00141-ip-10-147-4-33.ec2.internal.warc.gz"} |
Binary Representation of Real Numbers
February 7th 2011, 12:05 PM #1
Junior Member
Jan 2010
Binary Representation of Real Numbers
Hey everyone,
I have question that is asking to show that the set of real numbers has no binary representation. I understand that real numbers cannot have a one to one correspond... | {"url":"http://mathhelpforum.com/discrete-math/170466-binary-representation-real-numbers.html","timestamp":"2014-04-16T14:29:21Z","content_type":null,"content_length":"32654","record_id":"<urn:uuid:a1d1002c-6395-48f0-bff5-76ee10f30888>","cc-path":"CC-MAIN-2014-15/segments/1397609532573.41/warc/CC-MAIN-20140416005212-00... |
Abstract Algebra
October 15th 2008, 08:59 PM
Abstract Algebra
I have no clue how to attack these question one. All help or hints is appreciated.
G always denotes a group
1. Let G be finite and G not equal to {e}. Show that G has an element of prime order.
2. Prove that isomorphic groups have isomorphic ... | {"url":"http://mathhelpforum.com/advanced-algebra/53971-abstract-algebra-print.html","timestamp":"2014-04-20T10:13:44Z","content_type":null,"content_length":"14914","record_id":"<urn:uuid:d6811d51-fe9e-406e-ac71-00cee8cb992e>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00591-ip-10-1... |
absolute simultaneity with Einstein synchronized clocks?
The set up seems extremely confused or at least incomplete.
What is “a”
“M(a(xa) “ looks like a typo.
Can we assume x’=0 is where the observer R’ is at on I’
When t=? & t’=? did R’ crossed x=0 sometime before the light flashed.
The light flashes at x=0 t=0; where... | {"url":"http://www.physicsforums.com/showpost.php?p=1769288&postcount=4","timestamp":"2014-04-20T14:12:50Z","content_type":null,"content_length":"9581","record_id":"<urn:uuid:731cbaf3-6659-4d20-8f61-91c047650bad>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00231-ip-10-147-4-33.ec2.... |
Westwood Area 2, OH Math Tutor
Find a Westwood Area 2, OH Math Tutor
...In addition, I was a teaching assistant for undergraduate and graduate students in the Biomedical Engineering and Kinesiology departments. It is my goal to not only teach my students the
material, but to give them the tools needed to succeed in... | {"url":"http://www.purplemath.com/westwood_area_2_oh_math_tutors.php","timestamp":"2014-04-18T14:06:22Z","content_type":null,"content_length":"24322","record_id":"<urn:uuid:55365bd9-1f89-4e4d-9479-0f50838dc5e4>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00556-ip-10-147-4-33.ec2.int... |
Undergraduate Catalog
Mathematical Sciences
Mathematics is the international language of science and technology. Much of the subject matter in engineering and the natural sciences, as well as some social sciences such as economics, is
presented in mathematical terms. Mathematical and statistical techniques are vital in... | {"url":"http://www4.uwm.edu/academics/undergraduatecatalog/SC/D_LS_600.html","timestamp":"2014-04-17T09:52:10Z","content_type":null,"content_length":"82589","record_id":"<urn:uuid:da57451e-dc84-413e-803c-16d41585adb7>","cc-path":"CC-MAIN-2014-15/segments/1397609527423.39/warc/CC-MAIN-20140416005207-00059-ip-10-147-4-33... |
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x+y=-7 2x-y=-8
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Your question... | {"url":"http://openstudy.com/updates/529ec4d4e4b030bcac5df45c","timestamp":"2014-04-20T08:35:48Z","content_type":null,"content_length":"46798","record_id":"<urn:uuid:a50a06d4-06bc-4ed7-ba3d-210764004b21>","cc-path":"CC-MAIN-2014-15/segments/1397609538110.1/warc/CC-MAIN-20140416005218-00477-ip-10-147-4-33.ec2.internal.w... |
Albany, CA Prealgebra Tutor
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...Proofreading is the final finishing touch on a written work of quality. After cranking out a rough draft, it's time to examine the literary elements of its product. From a quick SpellCheck to
an actual line-by-line hands-on examination, ensuring pro... | {"url":"http://www.purplemath.com/Albany_CA_Prealgebra_tutors.php","timestamp":"2014-04-17T04:13:54Z","content_type":null,"content_length":"24117","record_id":"<urn:uuid:8a5d1dab-ba69-40bb-a113-667697d644a9>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00090-ip-10-147-4-33.ec2.inter... |
dailysudoku.com :: View topic - Mistake!
Discussion of Daily Sudoku puzzles
Author Message
Victor Posted: Tue Jan 15, 2008 4:48 pm Post subject: Mistake! ... | {"url":"http://www.dailysudoku.com/sudoku/forums/viewtopic.php?t=2289&start=0&postdays=0&postorder=asc&highlight=","timestamp":"2014-04-16T07:32:16Z","content_type":null,"content_length":"33156","record_id":"<urn:uuid:9eea8767-c185-4e76-988e-822b09560b71>","cc-path":"CC-MAIN-2014-15/segments/1397609521558.37/warc/CC-MA... |
March 2010
March 27, 2010
Pure Spinor Signature
By some coincidence, I’ve had several discussions, recently, about Nathan Berkovits’s pure spinor formulation of the superstring. Which reminds me of something I’ve long puzzled over. Nathan
invariably works in Euclidean signature, where the pure spinor constraint is
(1)$... | {"url":"http://golem.ph.utexas.edu/~distler/blog/archives/2010_03.shtml","timestamp":"2014-04-19T09:25:00Z","content_type":null,"content_length":"65984","record_id":"<urn:uuid:7fd33e9e-f19a-4a8d-8d32-74961a755dc2>","cc-path":"CC-MAIN-2014-15/segments/1397609537097.26/warc/CC-MAIN-20140416005217-00514-ip-10-147-4-33.ec2... |
Locust Valley Math Tutor
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...Social work or psychology students are common; of course, I am open to whatever kind of program you are in. Various students also have been in business, linguistics, auditory processing,
medicine. Statistics is pretty much the same regardless of the conten... | {"url":"http://www.purplemath.com/Locust_Valley_Math_tutors.php","timestamp":"2014-04-17T04:28:37Z","content_type":null,"content_length":"24021","record_id":"<urn:uuid:1c68f8b1-e862-4f89-b55c-0e5dce7b98b8>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00567-ip-10-147-4-33.ec2.interna... |
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If a galaxy is located 200 million light years from Earth, wha... | {"url":"http://openstudy.com/updates/509bccb0e4b0a825f21ac471","timestamp":"2014-04-20T18:42:39Z","content_type":null,"content_length":"35335","record_id":"<urn:uuid:8de3ad71-8202-44a2-8173-721d5f13e0d6>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00419-ip-10-147-4-33.ec2.internal.... |
Finding Equations of Angle Bisectors between Two Lines
Date: 08/14/2004 at 01:45:11
From: Aryan
Subject: Angle Bisector!
Is there any way or formula to find the coordinates of points which
lie on the line that bisects the angle between two given lines?
We know four points in the plane:
Line 1 passes through points P1 a... | {"url":"http://mathforum.org/library/drmath/view/65456.html","timestamp":"2014-04-16T05:20:33Z","content_type":null,"content_length":"6962","record_id":"<urn:uuid:7c49dbf7-7089-492b-afda-a022d2a46ab6>","cc-path":"CC-MAIN-2014-15/segments/1397609521512.15/warc/CC-MAIN-20140416005201-00457-ip-10-147-4-33.ec2.internal.war... |
Model Indeks Tunggal Sebagai Alat Pembentukan Portofolio Optimal Untuk Pengambilan Keputusan Investasi
Torangga, Yusfan Ari (2007) Model Indeks Tunggal Sebagai Alat Pembentukan Portofolio Optimal Untuk Pengambilan Keputusan Investasi. Other thesis, University of Muhammadiyah Malang.
Download (107kB) | Preview
This re... | {"url":"http://eprints.umm.ac.id/8538/","timestamp":"2014-04-18T05:42:26Z","content_type":null,"content_length":"21971","record_id":"<urn:uuid:006bf33f-142d-4505-a68f-9c68b63eecbd>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00384-ip-10-147-4-33.ec2.internal.warc.gz"} |
Teaser Betting Strategy
Teasers are one the easiest bets to calculate value of, and then find +EV wagering opportunities. Even if you have no experience with sports betting math, and even if you’ve never heard of a teaser
before, this article will tell you everything you need to know and more about teaser betting. I’ll... | {"url":"http://www.intensegambling.com/sports-betting/online/strategy/teaser-betting-strategy/","timestamp":"2014-04-16T10:19:59Z","content_type":null,"content_length":"45512","record_id":"<urn:uuid:3e8ae296-ee40-46ba-ba20-81a162ae4924>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-0... |
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Ok i have to solve this equation by using elimination and the ... | {"url":"http://openstudy.com/updates/5057f863e4b0a91cdf454c90","timestamp":"2014-04-19T07:09:39Z","content_type":null,"content_length":"144620","record_id":"<urn:uuid:8ea085e3-db8b-4640-a5a4-8c1e5dd2f80a>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00519-ip-10-147-4-33.ec2.internal... |
Wittgenstein and Thurston on Understanding
Posted by David Corfield
Two contributions to the Berlin Workshop I didn’t mention addressed the Jaffe-Quinn debate (original article, 15 mathematicians reply, Thurston replies, Jaffe and Quinn reply to the replies). Michael
Stoeltzner spoke on The Ontology of Mathematics, whi... | {"url":"http://golem.ph.utexas.edu/category/2006/10/wittgenstein_and_thurston_on_u.html","timestamp":"2014-04-21T01:12:57Z","content_type":null,"content_length":"24508","record_id":"<urn:uuid:5e7c6a41-9612-4ecb-ac90-98f9e8f5b7b3>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00044-ip... |
Mr. Stewart's MathEd Musings
Today we finished discussing an activity we created last week. We were to take a paper fold and use it to teach mathematics. The most challenging aspect of this task was to design a problem that
would actually teach a mathematical concept. I, and it seemed like many of the others, have trad... | {"url":"http://mathedmusings.blogspot.com/2007/07/problem-solving-for-learning.html","timestamp":"2014-04-19T09:26:32Z","content_type":null,"content_length":"33016","record_id":"<urn:uuid:880f54bf-ea2c-4179-a98c-10abfd262254>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00164-ip-10-... |
Differentiating a function with a Heaviside Step Function
March 30th 2008, 05:38 AM #1
Mar 2008
Differentiating a function with a Heaviside Step Function
The function H(x) defined by
$H(x) = 0$$, x < 0$
$H(x) = 1/2$$, x = 0$
$H(x) = 1$$, x > 0$
$F(x) = f(x)H(x - b)$
Find the conditions on $f... | {"url":"http://mathhelpforum.com/calculus/32498-differentiating-function-heaviside-step-function.html","timestamp":"2014-04-20T06:26:44Z","content_type":null,"content_length":"45898","record_id":"<urn:uuid:700ff670-516e-4db7-9311-6ec7997bb1d5>","cc-path":"CC-MAIN-2014-15/segments/1397609539493.17/warc/CC-MAIN-201404160... |
IMA Tutorial (part III):
Generative and probabilistic models of data
Probabilistic generative models
An Introduction to the Power Law
Early Observations: Pareto on Income
Early Observations: Lotka on Citations
Equivalence of rank versus value formulation
Constructing a book: snapshot at time t
Constructing a book: snap... | {"url":"http://www.ima.umn.edu/talks/workshops/5-5.2003/tomkins/part2/tomkins2_files/outline_collapsed.htm","timestamp":"2014-04-20T08:32:59Z","content_type":null,"content_length":"5471","record_id":"<urn:uuid:27e7e998-c94d-4af9-b3f4-861ed21bb109>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140... |
Venn diagram
From Wikipedia, the free encyclopedia.
Venn diagrams
diagrams (pronounced "oiler") and
Johnston diagrams
are similar-looking illustrations of
The Venn diagram above can be interpreted as "the relationships of set A and set B which may have some (but not all) elements in common".
The Euler diagram above can... | {"url":"http://www.factbook.org/wikipedia/en/v/ve/venn_diagram.html","timestamp":"2014-04-17T21:22:52Z","content_type":null,"content_length":"9092","record_id":"<urn:uuid:333d22d1-d9cd-4a52-b806-c164ef91efb6>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00065-ip-10-147-4-33.ec2.inter... |
Test today! Help!!
November 10th 2008, 05:32 AM #1
Junior Member
Aug 2008
Information is given about a complex polynomial f(x) whose coefficients are real numbers. Find the remaining zeros for f.
Degree 3; zeros 2, 3 - i
A. -3 + i
B. none
C. -2
D. 3 + i
E. None of the above
how do yo... | {"url":"http://mathhelpforum.com/algebra/58715-test-today-help.html","timestamp":"2014-04-18T11:17:47Z","content_type":null,"content_length":"33461","record_id":"<urn:uuid:acb32f71-9fd8-44b5-a951-38f418c287ae>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00546-ip-10-147-4-33.ec2.int... |
Math Forum: Teacher2Teacher - Q&A #1609
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From: Gail (for Teacher2Teacher Service)
Date: May 28, 1999 at 06:47:08
Subject: Re: Thousandth
What sorts of models did you use to work with tenths and hundredths? In my
fifth grade classroom we use unit blocks (Dienes blocks), and we cha... | {"url":"http://mathforum.org/t2t/message.taco?thread=1609&message=3","timestamp":"2014-04-18T18:36:46Z","content_type":null,"content_length":"5620","record_id":"<urn:uuid:a3a7afaf-1a26-41ff-b975-f9f65a4ddc16>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00571-ip-10-147-4-33.ec2.inter... |
Jeremy Brazas
My research interests include algebraic, geometric, and general topology and category theory. My most recent interests deal with generalized theories of covering spaces, topological algebra, and
understanding homotopy groups of locally complicated spaces.
Research Papers:
• J. Brazas, P. Fabel, Strongly... | {"url":"http://www2.gsu.edu/~jbrazas/research.html","timestamp":"2014-04-18T18:11:50Z","content_type":null,"content_length":"9272","record_id":"<urn:uuid:47d37b69-ba64-4a55-9b64-fcea8a1b4c99>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00110-ip-10-147-4-33.ec2.internal.warc.gz"} |
A collection of lines or strings that are plaited together and whose ends are attached to two parallel straight lines. Braid theory was pioneered by the Austrian mathematician Emil Artin (1898–1962)
and is related to knot theory. It also has other applications, for instance if we consider the way the roots of a polynom... | {"url":"http://www.daviddarling.info/encyclopedia/B/braid.html","timestamp":"2014-04-17T10:16:01Z","content_type":null,"content_length":"5871","record_id":"<urn:uuid:d9401082-3396-420d-9c04-3fac4bef23cf>","cc-path":"CC-MAIN-2014-15/segments/1397609527423.39/warc/CC-MAIN-20140416005207-00303-ip-10-147-4-33.ec2.internal.... |
Midtown, NJ Algebra Tutor
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...If you have an orderly picture of the material in your brain, you will understand the material, otherwise you will not. It is important to build from the bottom. I go deep into the student's
knowledge and find out whether they have all the necessary buil... | {"url":"http://www.purplemath.com/Midtown_NJ_Algebra_tutors.php","timestamp":"2014-04-19T15:01:33Z","content_type":null,"content_length":"24020","record_id":"<urn:uuid:59ef9507-3980-4786-8df1-0a17e34582d4>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00164-ip-10-147-4-33.ec2.internal... |
mutual information. concave/convex
hi everybody,
while looking on the mutual information of two variables, one find that it is concave of p(x) given p(x|y) and convex of p(x|y) given p(x).
the first statement is okey, but when it comes to proving the second, i get stuck, even when i find proofs already done i didn't ge... | {"url":"http://www.physicsforums.com/showthread.php?p=3625572","timestamp":"2014-04-21T04:49:19Z","content_type":null,"content_length":"20279","record_id":"<urn:uuid:b2dc2c89-914c-4ae5-bbc6-4f67675cd1af>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00586-ip-10-147-4-33.ec2.internal.w... |
Decatur, GA Geometry Tutor
Find a Decatur, GA Geometry Tutor
...So you can tell I love to teach! I have been working with students in math since I was in high school myself. I tutored students throughout college and beyond and have worked with students in
all math subjects from 6th grade through calculus.
25 Subj... | {"url":"http://www.purplemath.com/Decatur_GA_Geometry_tutors.php","timestamp":"2014-04-16T21:59:23Z","content_type":null,"content_length":"23869","record_id":"<urn:uuid:8c0b6bf6-b4aa-41d5-88cb-5a820a293357>","cc-path":"CC-MAIN-2014-15/segments/1397609525991.2/warc/CC-MAIN-20140416005205-00452-ip-10-147-4-33.ec2.interna... |
Avondale, AZ Prealgebra Tutor
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...In my classes, I have many students with ADD and ADHD diagnoses and have great success helping them achieve their educational goals. I am a certified Cross-Categorical Special Education
teacher in the state of Arizona which means I can teach stu... | {"url":"http://www.purplemath.com/Avondale_AZ_Prealgebra_tutors.php","timestamp":"2014-04-20T01:44:18Z","content_type":null,"content_length":"24171","record_id":"<urn:uuid:d132bded-95b7-4a51-8976-e7d734e9ef82>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00656-ip-10-147-4-33.ec2.inte... |
[Numpy-discussion] Changing a matrix element into a scalar
PHobson@Geosynte... PHobson@Geosynte...
Tue Aug 3 11:28:49 CDT 2010
Matrices are two dimensional arrays so you need two indices to access an individual element:
In [1]: from numpy import matrix
In [2]: m = matrix([[1.2],[2.3]])
In [3]: m[0,0]
Out[3]: 1.2
-----O... | {"url":"http://mail.scipy.org/pipermail/numpy-discussion/2010-August/052075.html","timestamp":"2014-04-17T16:15:36Z","content_type":null,"content_length":"4222","record_id":"<urn:uuid:053c8bfa-d243-4e73-9d85-c15d5fd3edfc>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00636-ip-10-147-... |
[FOM] Euclid's axioms
Alasdair Urquhart urquhart at cs.toronto.edu
Fri Nov 1 15:00:16 EST 2002
Fred Richman wrote:
"Matthew Frank pointed out to me that Euclid's axioms have a
model consisting only of the constructible points.
Of course Hilbert's "Axiom of line completeness" does not
hold in this model, but then neithe... | {"url":"http://www.cs.nyu.edu/pipermail/fom/2002-November/006011.html","timestamp":"2014-04-20T08:17:08Z","content_type":null,"content_length":"3170","record_id":"<urn:uuid:0e694020-60d9-44f9-b6da-70435e284f2a>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00469-ip-10-147-4-33.ec2.in... |
Wolfram Demonstrations Project
Optimal Temperature Policy for a Reversible Reaction
This Demonstration shows the temperature trajectory that maximizes the reaction rate of a reversible reaction.
For the reaction
, the rate is
with and ,
where and are the pre-exponential Arrhenius constants for the forward and reverse r... | {"url":"http://demonstrations.wolfram.com/OptimalTemperaturePolicyForAReversibleReaction/","timestamp":"2014-04-17T03:53:17Z","content_type":null,"content_length":"46305","record_id":"<urn:uuid:e1013686-7da6-408b-a87c-9a404200983c>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00380-... |