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Wikipedia:Reference desk/Archives/Mathematics/February 2015

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February 1

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 1

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

February 2

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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

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 3

  1. MATHEMATICS

February 4

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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

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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

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 6

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

February 7

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 7

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

February 8

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 8

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

February 9

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 9

  1. Approximation of hidden markov model by probability distribution

February 10

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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

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 11

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

February 12

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 12

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

February 13

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 13

  1. Massey-Omura cryptosystem

February 14

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 14

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

February 16

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 16

  1. zeta function

February 17

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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

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 19

  1. Logarithms

February 20

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 20

  1. Topic on consecutiveness

February 21

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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

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 23

  1. Liquid flow
  2. Random walk

February 24

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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

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 25

  1. Help me to understand some mathematical picture?

February 26

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 26

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

February 27

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Wikipedia:Reference_desk/Archives/Mathematics/2015 February 27

  1. Box Plot

February 28

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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