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Wikipedia:Reference desk/Archives/Mathematics/July 2012

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Welcome to the Wikipedia Mathematics Reference Desk Archives
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July 1

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 1

  1. Which font is used in equations
  2. Probability question
  3. "Best" twice differentiable upper bound approximations of functions for optimization?

July 2

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 2

  1. Bases of Fermat quotients
  2. Material conditional and functional completeness
  3. Name for set including Moebius strip and Klein Bottle?

July 5

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 5

  1. Cartesian product of an EVEN number of nonorientable manifolds
  2. Solving an equation for a variable

July 7

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 7

  1. Air Conditioner running cost.

July 8

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 8

  1. math questions regarding 1 per hundred, 1 per thousand, 1 per ten and other numbers
  2. Rigid Body Rotation
  3. matrix vs. tensor

July 9

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 9

  1. Kindly Help me with datum curve equation
  2. Interpolating Inputs or Outputs

July 10

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 10

  1. Pythagorean triples

July 11

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 11

  1. Reducing number of input variables in data modeling
  2. Formula to compute Euler angles messed up

July 12

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 12

  1. Area of part of an oval

July 13

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 13

  1. Confusion about orbit of PSL(2,5)/A_5 on unordered triples (10/20?)
  2. What's the correct word for "periodizing" the input to a periodic function?
  3. Fourier Analysis

July 14

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 14

  1. pessimistic tit-for-two-tats
  2. Concerning Ramsey Numbers
  3. Are circles fractals?

July 16

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 16

  1. How do you call in statistics when you correct the data?
  2. "n-body problem" singularities
  3. (simple) Example of design with non-fixed intersection numbers?

July 17

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 17

  1. Power in the Zero Channel
  2. two problems with tangent circles
  3. A weird kind of 20 sided dice...

July 18

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 18

  1. Polygon triangulation
  2. Collective term for interpolation and extrapolation
  3. Alternate definition?

July 19

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 19

  1. Number that isn't a scalar
  2. Extendible cardinals vs Reinhardt cardinals
  3. rotating a sphere in higher dimensions

July 20

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 20

  1. If you know the average of a group bigger or equalt to 2 ...

July 21

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 21

  1. System of bilinear equations
  2. (2x)^y=x
  3. Function inversion via control theory

July 22

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 22

  1. Texniccenter
  2. Commission
  3. Show that the hemisphere is connected.

July 23

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 23

  1. Prime Pascal
  2. Different non-touching edge choices on Regular polyhedra question...
  3. Error in article but cannot edit it
  4. Primorials

July 24

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 24

  1. Solve the problem
  2. Word numerical
  3. Wikigraphs

July 25

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 25

  1. in MATLAB, the absolute value of the Pearson correlation coefficient is much higher than sqrt(R^2) of least squares fit
  2. Term for visual appearance of slope
  3. How does curvature correlate to velocity in a random walk with randomly-distributed speeds (i.e. Brownian motion)?

July 27

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 27

  1. Lagrangian mechanics

July 28

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 28

  1. Very important question
  2. Tests

July 29

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 29

  1. under a coordinate transformation
  2. I don't think you should be able to prove it.
  3. is "can't be proof" synonymous with independent?

July 30

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 30

  1. suppose a man produces a proof P that statement Q cannot be proven under Some Axioms but definitely has a certain Truth Value (unknown) under those axioms.
  2. Standard proof for identity:
  3. we just proved we can't prove it one way or another or know which one it is, but this statement is definitely false or true - not independent.
  4. example of an axiom that is statistically probably false
  5. popular description of result of independence
  6. Integral proof

July 31

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Wikipedia:Reference_desk/Archives/Mathematics/2012 July 31

  1. Matrices are unique?
  2. Quality of polling
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