Wikipedia:Reference desk/Archives/Mathematics/October 2011

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October 1

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 1

1. Solving cos(ax) = cos(bx) generally
2. moving an article from my priviate place to the public

October 3

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 3

1. Scrabble probabilities
2. Hypergeometric distribution wtf
3. Why do we have odd and even numbers
4. How to calculate Deming regression
5. Given 2 lines that cross in a multidimensional space, how to find the angle?
6. Lebesgue integrals

October 4

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 4

1. Sprague-Grundy theory

October 5

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 5

1. Sine x tending towards x without L'Hôpital's rule.
2. Significance testing with subgroups
3. Quintic Equations Solutions

October 6

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 6

1. Using "curve" to refer to a straight line
2. .9 repeating and 1+1=3
3. Number Game

October 7

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 7

October 8

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 8

1. automating interpreting projections.
2. Series identity

October 10

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 10

1. Transformation of a Gamma function
2. I would like to submit an article on the subject of Integer Factorization.
3. Existence of near-diagonalization
4. General form of a diagonalizable matrix.

October 11

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 11

1. Jacobson density theorem: topological interpretation
2. Use of Mathematical symbols for "or" in solutions to equations and inequalities, etc.
3. Math refresher

October 12

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 12

1. Incidence of light onto panel?

October 13

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 13

1. 1959 Textbook with Chapter by Kernighan
2. Teaching math: paper against computer
3. Logical implications of "I propose a construction"

October 14

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 14

1. Category theory - Ob and Mor functors
2. small samples size probabilities

October 15

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 15

1. Sum of cubes of Pythagorean triples
2. Alice and Bob in the Candy Shop
3. Circle probability
4. error in a measurement
5. 1+1=2
6. Closure of C

October 16

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 16

1. Epsilon delta
2. Analyticity test
3. May I use wikipedia to publish the continuum hypothesis?
4. 1 2 3 4 5 6 7 8 9 0

October 17

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 17

1. complex analysis
2. Bond prices and interest rates

October 18

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 18

1. 14th-degree polynomial functions in the real world?

October 20

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 20

1. Associativity axiom in groups
2. Multiple singular eigenvalues
3. Behaviour of a function (modified)

October 21

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 21

1. Trigonometry
2. isometry T => T - T(0) linear?

October 22

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 22

1. Interesting inner product question

October 23

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 23

1. Zero integral theorem
2. Affine transformation equivalency
3. When do you raise the rate on a certificate of deposit if there are unpredictable increases in interest rates?
4. Circle question
5. Inflection
6. p-adic integers and isomorphisms

October 24

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 24

1. Quadratic formula
2. Is the Prouhet–Thue–Morse constant all sixes and nines in hexadecimal?
3. Buy expensive properties first, all else equal?
4. Integration
5. Determining whether 3x3 matrices are similar
6. Solving polynomials in the p-adic integers

October 25

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 25

1. Randomly ordering a set of non-duplicating integers?
2. Zero times infinity = 1? 1 divided by zero = infinity?
3. Idempotents in a category
4. The Lorentz attractor in Lagrange notation

October 26

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 26

1. Lotka-Volterra equations

October 27

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 27

1. Is this an abuse of notation?
2. compute incomplete beta function
3. Generate values for a "logarithmic sweep"

October 28

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 28

1. probability question
2. Puzzling junior high maths question
3. Difference in chances?
4. General Topology

October 29

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 29

1. Introductions to number theory, geometry
2. rational and irrational numbers
3. Deal or no Deal

October 30

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 30

1. Funding students without student loans
2. Trisecting an angle
3. Càdlàg functions
4. Trisection
5. Graph of sqrt(x)=sqrt(y)
6. Coloured balls in a hat probability question

October 31

Wikipedia:Reference_desk/Archives/Mathematics/2011 October 31

1. 1 x 10 to the power of nought
2. Differentiation
3. Lorenz attractor—continous or not?
4. Okay, Random Weird Question