Wikipedia:Reference desk/Archives/Mathematics/December 2012

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December 1

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 1

1. Function defining a gravity well?
2. Confidence interval with detected sampling bias
3. The solution of the equation: x^y=y^x , for x≠y, {x,y}≠{2,4} , in natural numbers.

December 3

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 3

1. random sampling, control and case
2. How do I choose a better method for robust regression?

December 4

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 4

1. Translation of german reference
2. :File:Comparison_convolution_correlation.svg
3. Zeta (1/2)

December 5

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 5

1. Analysis Q
2. Natural solutions of the equation: $a_{1}^{a_{2}^{a_{3}}}=b_{1}^{b_{2}^{b_{3}}}$, for ${a_{1},a_{2},a_{3}}={b_{1},b_{2},b_{3}}$, while $a_{1}neqb_{1},a_{2}neqb_{2},a_{3}neqb_{3}$.
3. Unknown pattern
4. Update on "Request for Help Deriving the Formula Describing the Probability that a Set of Event Outcomes Might Occur for Make-Up Homework"
5. Natural Numbers/Algebra

December 6

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 6

1. "The Infins" book

December 7

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 7

1. Radius of intersection of sphere and plane
2. Mazes (complex branching passages)

December 8

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 8

1. X chromosomes and statistics
2. Math of the McEliece cryptosystem
3. Pump capacity formulas

December 9

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 9

1. New musical tuning system calculation, math question.
2. "Maybe they're all wrong" ensembles
3. Points determining an ellipse or sphere

December 10

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 10

1. Impossible math problems
2. Ratio of x / y > x^y for integers excluding 0

December 11

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 11

1. Holomorph
2. Every prime has a Fibonacci divisible by it?
3. Reciprocals of primes

December 13

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 13

1. Bailey Welch rule.

December 14

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 14

1. The Laplacian
2. sequence which is not in any l^p
3. Am I right?

December 15

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 15

1. "≧" and "≦"
2. Cost:Benefit

December 16

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 16

1. Line chart shapes

December 17

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 17

1. Confusion about the Central Limit Theorem
2. Rotundas
3. Noisy Chaos

December 18

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 18

1. Talk:Statistical inference#deduction and induction and prediction

December 19

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 19

1. # of points where hamming distance >= 3 in {0,1}^n?

December 20

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 20

1. What the heck does this mean?
2. Anisotropic quadratic form on 2-dimensional space over finite field of odd order: how many "square" points?
3. Solving a function containing xe^x
4. Riemann zeta function of the empty set

December 22

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 22

1. Stats
2. Possible impedances as function of frequency

December 23

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 23

1. the tiles of Catan
2. Divisors of squares of primes

December 24

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 24

1. quadrilateral question

December 26

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 26

1. Deal or No Deal?

December 27

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 27

1. List of countries by firearm-related death rate

December 30

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 30

1. Confirm an Answer
2. Calculating an ellipse after rotating a circle
3. Bayesian induction

December 31

Wikipedia:Reference_desk/Archives/Mathematics/2012 December 31

1. Matrices and Indices