Wikipedia:Reference desk/Archives/Mathematics/February 2015

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February 1

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 1

1. "For all vertices... but at most $gamman$ of them"
2. Fitting cylinders inside a tube

February 2

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 2

1. Quiz Question
2. Probability of cashing in
3. Pólya Problem to Prove (Part I Chap 19)
4. percentage

February 3

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 3

1. MATHEMATICS

February 4

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 4

1. Cubes of the form 3 x² ± x y + 5 y² with x, y coprime
2. Characteristic polynomial without determinant

February 5

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 5

1. Identifying a vertex that is in every maximum matching of a bipartite graph
2. Name of the shape in between three circles?

February 6

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 6

1. Game/puzzle with smallest game-tree complexity
2. Rearranging equation with integer division

February 7

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 7

1. Animation of anchored rotating cube
2. zeros of zeta function

February 8

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 8

1. Euclidean distance
2. Is there a 1:1 equivalence between algebra and geometry?

February 9

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 9

1. Approximation of hidden markov model by probability distribution

February 10

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 10

1. Is it an anomaly that the month of February 2015 contains four occurrences of each day of the week?
2. Queuing theory: number of servers needed to meet QoS _target
3. Exponent of monster group F1?
4. A "meta-Pólya" conjecture?
5. A 'random' sequence where the previous value influences the next

February 11

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 11

1. Name of a group
2. Operators in Finite Groups

February 12

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 12

1. Diffusion of innovations: logit or probit?
2. peculiar integer factorization

February 13

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 13

1. Massey-Omura cryptosystem

February 14

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 14

1. Polygon with 1,000,000 sides
2. zeros of zeta function

February 16

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 16

1. zeta function

February 17

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 17

1. Slicing a cube
2. Set Theory
3. Is it an anomaly that the month of February 2015 contains four occurrences of each day of the week? (February 10)

February 19

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 19

1. Logarithms

February 20

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 20

1. Topic on consecutiveness

February 21

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 21

1. Does quantum mechanics influence the model of ZFC we must use?
2. arithametic sequence
3. Bailey–Borwein–Plouffe formula not working for me

February 23

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 23

1. Liquid flow
2. Random walk

February 24

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 24

1. Reference Formula Policy for Exoplanets
2. Moving sofa problem
3. Statistics percentile question
4. Rubik's Cube Cycle for FRT?

February 25

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 25

1. Help me to understand some mathematical picture?

February 26

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 26

1. Sample size and confidence levels
2. Calculation method help

February 27

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 27

1. Box Plot

February 28

Wikipedia:Reference_desk/Archives/Mathematics/2015 February 28

1. Median
2. Identify partial differential equation
3. Regression with a graph (machine learning)
4. Statistical tests for normality