Wikipedia:Reference desk/Archives/Mathematics/September 2011

Welcome to the Wikipedia Mathematics Reference Desk Archives
The page you are currently viewing is a monthly archive index. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages.

September 1

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 1

1. No (x) ?
2. Uniqueness and existence of the positive nth root
3. Analytic Functions

September 2

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 2

1. Finding reverse mapping in modular arithmetic problem
2. Column comparison
3. Cubic metric
4. Probability issue and programming it

September 3

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 3

1. Sampling distribution of a difference between two independent sample proportions

September 5

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 5

1. make all sums
2. word problem

September 6

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 6

1. Lottery games similar to australia's "soccer pools"
2. Conjugacy class?
3. Tile stacking
4. Motivation to study mathematics
5. Dispersion formula

September 7

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 7

1. infinity

September 8

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 8

1. Did I use neighborhood right?
2. Maximising winnings on Euromillions
3. (-1/3)^(-1/3)
4. Toric Configuration Space

September 9

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 9

1. What does the Standard Deviation represent in laymans terms
2. Hypergeometric Series
3. Inverse of 4th degree polynomial
4. mathematics

September 10

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 10

1. Enormous number digits puzzle
2. Limit question

September 11

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 11

1. Can't recall details of a math puzzle
2. Question about formula involving exponential functions
3. Tensors over ℤ₂

September 12

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 12

1. Checking Conservativeness
2. Time series in Excel

September 13

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 13

1. Name for variable update procedure
2. Relationship between Computer Science and Mathematics
3. universe where pi is 3
4. Variant of Entscheidungsproblem

September 15

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 15

1. Average area of random triangle inside the unit ball
2. What is the Differential, anyway ?
3. Help with Diophantine approximation problem

September 16

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 16

1. Aleph numbers

September 17

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 17

1. Normalizing logarithmic lines
2. Finding the transformations of a matrix

September 18

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 18

1. Continuous function
2. (Simple?) projectile motion

September 19

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 19

1. Different Types of Integrals and Derivatives
2. Three person oblivious transfer
3. Distribution of charge in 1,2,3 dimensions on symmetrical bodies
4. I keep coming back to this question, and it never makes sense to me.
5. how would mathematicians react if math had human, contemporary meaning?

September 20

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 20

1. When will Goldbach's conjecture be tested.
2. Intergrating ring of charge in 1/r field
3. Laplacian correction for discriminative naive Bayes
4. Is this function chaotic

September 21

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 21

1. Binary numbers with no adjacent 1s
2. eating mashed potatoes with your hands when silverware is available

September 22

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 22

1. Mixed Member Proportional Voting and Gerrymandering

September 23

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 23

1. 360 sq centimeters
2. Speed of Light
3. Could someone please check this comment on Balanced ternary?
4. The cartesian plane as a sphere - theoretical maths
5. maximum traffic flow
6. Derivative of Sine

September 24

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 24

1. Logarithms of non-positive real numbers

September 25

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 25

1. How to find specific arguments of two functions
2. Differential dx
3. What does the mathematical symbol ⊙ represent?
4. counting
5. Game Theory Q

September 26

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 26

1. A bit on the Heavi Side
2. Trig identity and complex numbers.

September 27

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 27

1. Multiply 3-dimensional matrices
2. Easy way to judge if a holomorphic function is an injection and/or has no branch points
3. Are polynomial functions invertible
4. ultrafilters
5. Explicit Runge-Kutta methods
6. Quick question on exponentials
7. Series

September 28

Wikipedia:Reference_desk/Archives/Mathematics/2011 September 28

1. Power Spectrum Estimation
2. Integral Truths and mein eigenes Problem
3. polar range
4. collide with earth?
5. epsilon-delta