<< Dec | Mathematics desk | Feb >>

Welcome to the Wikipedia Mathematics Reference Desk Archives
The page you are currently viewing is a monthly archive index. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages.

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 1

1. Archimedes uses time machine to beat Lambert
2. SOLVING ALL POLYNOMIALS BY RADICALS
3. matrix

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 2

1. Srinivasa Ramanujan's deathbed theory solved after 100 years
2. Concave quadrilateral requirement?
3. my hat, your hat, quantum entanglement, and OTP

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 3

1. Low-probability high-payoff events
2. optimization and regularization!
3. Decomposing hermitian matrix into rank-one matrices
4. Cell phone pre-paid card optimization

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 4

1. Starting hand matchups in Texas holdem

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 5

1. Finite generation of ideal
2. Identities true for only small (square) matrices

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 6

1. abelian groups: dual group induces dual group of subgroup by restricting
2. Problem with editting an article based on one's own published paper?

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 9

1. How to prove the commutative property?
2. modulus/cardanality
3. Matrix inversions

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 10

1. How low can you go?
2. Trying to Calculate my Class Rank
3. Topics more tougher than calculus
4. Dirichlet distribution
5. Base 10, 11 and fingers question.
6. Rotation of arbitrary coordinate systems
7. regression for data that is a power function: copied from Miscellaneous desk

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 11

1. Converting this to an integrable form
2. Heuristic argument for expected number of solutions to specific congruence
3. Chances of counter-intuitive results from a betting system
4. Base pi

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 12

1. Computing the CDF of the Student's T-distribution
2. π = √10?
3. Sum of products
4. would it be a proof by construction of the possible existence of God?

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 15

1. Empty Sets and Neighbourhoods definition of a Topological Space
2. Hypergeometric function
3. Calculating the multiplicative order
4. Trouble Reading an Article

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 16

1. How many "non-trivially distinct" Gray codes of a given alphabet size and codeword length exist?

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 17

1. Riemann hypothesis for curves over finite fields
2. algebra word problems
3. Undecidability of the Collatz conjecture
4. What is radius of equilateral polygon?

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 18

1. Blackjack
2. number of subgroups
3. Visual Multiplication with Lines
4. Amount of starter positions possible in those random chess variants.

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 19

1. Riemann hypothesis for curves over finite fields
2. prime ideal extension and contraction
3. Running time of APR-CL
4. Estimating a categorical distribution
5. Geometric figure Extension.
6. Independence number of graph: bound similar to Lovasz number?

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 20

1. Integral

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 21

1. Lanchester Square Law
2. 3 3's

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 22

1. calculus
2. MDAS method
3. Examples of (1+1/n)^n in nature.
4. Why only one real cube root?

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 23

1. website regarding numbers like 13.7 billion
2. Is there a closed form expression for this quantity?

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 24

1. Chicken-and-Egg Problem
2. traditional limit definition of continuity implies topological definition
3. Complex numbers

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 25

1. Trapezoid
2. Limit
3. Probability question - SSN/DOB

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 26

1. Ehrenfeucht Fraisse Games
2. An arithmetico-geometric series?
3. Maclaurin series question
4. monad or not?
5. math problem

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 27

1. Limit 2
2. continuous compounding formula derivation proof

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 28

1. outer automorphisms

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 29

1. Proof of existence would be a useful start
2. Generalizing integral
3. trial and error method
4. Value of pi

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 30

1. Generalization of integral 2

Wikipedia:Reference_desk/Archives/Mathematics/2013 January 31

1. Curious Sample Spaces
2. Probability question