Wikipedia:Reference desk/Archives/Mathematics/April 2012

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April 1

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 1

1. Game Theory Textbook
2. <V/Vmax> Test

April 2

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 2

1. Closure of the union of sets
2. Morley triangle

April 3

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 3

1. Car accident
2. A level differentiation problem
3. Hull

April 4

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 4

1. Calculating Probabilities while playing "Lets Make a Deal.
2. there are 4 kinds of topology in Set{1,2},and 29 in Set{1,2,3}, is exist a Formula in a Set {1,2,3,4,5,6...n}?
3. Evaluation of Residue using Analytic Continuation
4. Bounding a tricky series
5. Evaluation of an Integral using Special Functions
6. Billiard ball accident
7. Creating a minimum spanning tree with arbitrary points allowed - name for this problem?

April 5

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 5

1. Series

April 6

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 6

1. Notation question

April 7

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 7

1. what is open subgroup in Group theory？
2. Expert opinion on methods required for proof of Goldbach's Conjecture
3. Perimeter that is tangent to a circle
4. Decidability and Goldbach's Conjecture

April 8

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 8

1. Polynomials modulo p
2. "Free" Nonassociative ring?
3. On Hypergeometric Functions
4. Hilbert's second problem
5. Showing an integral is well defined

April 9

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 9

1. 297/140 seems like an unusual answer.
2. Second Order ODEs
3. Generalised permutation block matrices?
4. Help locating a book
5. Powers of i
6. Can likelihood ratios used for estimation of post-test probability be continuous variables, or do they have to be dichotomous?

April 10

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 10

1. two parts
2. Volumes of parallelepipeds in higher dimensions.
3. Notation, conditional probability
4. Octahedral and icosahedral symmetry
5. mathematical conjectures formerly assumed true

April 11

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 11

1. Millions, billions, trillions?
2. Use of anova/ F-tests with count data

April 13

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 13

1. hypoethical
2. Time complexity of solving a polynomial
3. Is the winning response in the "Big Number Duel" a paradox
4. Definition of "e"

April 14

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 14

1. Black and white balls problem
2. The Rationals Are Dense In The Reals

April 15

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 15

1. The algebraic closure of Z2
2. biggest number proposal
3. Inequalities
4. Hiring k secretaries

April 16

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 16

1. Barbosa SSS
2. multiplicative functions
3. Definitions of logs and exponentials

April 17

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 17

1. is a single line parallel?
2. Inequalities (2)
3. This Integration problem is killing me!
4. Why is the autocorrelation vector of an Nx1 vector (2N-1)x1 long?
5. Seventeen or Bust project

April 18

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 18

1. Determinant solving
2. the graph is Compact

April 19

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 19

1. Mercator and stereographic projection
2. there is a kind of fuction named L-fuction,what meanings the "L"?
3. Interpretation of Beta hyperparameters
4. square footage

April 20

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 20

1. Limit question
2. Proof of order of operations
3. Recursively enumerable theory

April 21

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 21

1. Integration - Calculus
2. ~ Need Solid Judgement On Mathematical Tools ~
3. Matrix Decompsotion
4. Most popular math (grades 1-9) materials?

April 22

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 22

1. Natural logarithms, limits and sequences of functions
2. real integrals by residue theorem
3. Polynomials in Zp
4. Name/Identity of trig conversion function?

April 23

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 23

1. Pi
2. Modulus
3. integrals
4. Minor details
5. How to find a cubic root of a number in regular calculator models?

April 24

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 24

1. Primality question
2. Hungarian Algorithm using matrices

April 25

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 25

1. Interpolation in 2D
2. Prime <--> Fibonacci
3. Best way to represent mathematically?
4. Set Theory

April 26

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 26

1. Minimizing values
2. Functional derivative
3. Continuous function separating two points
4. True odds of a "fire bet" in craps

April 27

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 27

1. Invariant theory: matrices and invariants under upper triangular matrices

April 28

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 28

1. Cubic Interpolation Polynomials
2. Trigonometric Interpolation
3. More Interpolation
4. Request for applications

April 29

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 29

1. Music computation
2. Solved For Game Theory/Improved upon game theory/Corrected game theory
3. Latex package for Dynkin diagrams

April 30

Wikipedia:Reference_desk/Archives/Mathematics/2012 April 30

1. question about one sided limits
2. Calculating the 3 marks that drag a weighted average down the most