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Wikipedia:Reference desk/Archives/Mathematics/April 2017

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April 1

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 1

  1. Cube - Ellipsoid Bijection
  2. April 1st surprise, game theory
  3. A surprising theorem, whose formulation - has no free variables - and begins with an existential quantifier necessary for the surprise.

April 2

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 2

  1. Non-Hausdorff totally disconnected space
  2. Intuition Behind the Riemann ζ Functional Equation

April 3

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 3

  1. How do I do this
  2. Evaluating an integral
  3. Reverse Gaussian correlation inequality
  4. How quickly can a computer solve quintic equations?
  5. Matrix Algebra for ARIMA(1,0,0)

April 6

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 6

  1. coordination of movement of agents on a grid composed of circles
  2. Hidden information and probability
  3. Convexity and Concavtiy
  4. Constant sum

April 8

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 8

  1. Lagrange Multipliers with Inequality Constraints

April 9

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 9

  1. "Thirty days hath February ..."
  2. What is a polyomino??

April 10

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 10

  1. What's the present value of a million a year (inflation adjusted) till you die?
  2. Good software for doing math symbolically?

April 11

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 11

  1. Probability of having a subset

April 13

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 13

  1. Euler line forms a Fixed Angle with a Given Side

April 16

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 16

  1. Poncelet's closure theorem
  2. Ternary and n-terms ratios equivalent representations
  3. Hypercube/hypersphere volume question.

April 18

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 18

  1. Bayes' Theorem

April 20

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 20

  1. Rubik's Revenge all checkerboard

April 21

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 21

  1. Projections in Hilbert spaces

April 23

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 23

  1. Coiled Phone Cord
  2. Classifying n-gons

April 24

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 24

  1. derivative of constrained function is sum of unconstrained partials?
  2. Johnson's SU-distribution
  3. Face value numbers

April 25

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 25

  1. Cochleoid
  2. Broadcasting on a dynamic grid

April 28

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 28

  1. line of sight from building height
  2. number of independent sets in a regular graph
  3. Space of connected acyclic graphs on N

April 29

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 29

  1. Trouble with Wolfram Alpha, calculating height of spherical cap
  2. Chain Rule for Canonical Form
  3. Is the following Subset Sum Problem variant NP-hard?
  4. Remove peaks from data/rank articles by pageviews

April 30

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Wikipedia:Reference_desk/Archives/Mathematics/2017 April 30

  1. Bivariate polynomial curves
  2. Curves of constant width
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