Wikipedia:Reference desk/Archives/Mathematics/September 2012

= September 1 = Reference_desk/Archives/Mathematics/2012 September 1


 * 1) Konig's lemma

= September 2 = Reference_desk/Archives/Mathematics/2012 September 2


 * 1) Graph theory
 * 2) Maths and music
 * 3) Binomial process
 * 4) Stone Cetch Compactification using ultrafilters

= September 5 = Reference_desk/Archives/Mathematics/2012 September 5


 * 1) Project Euler question
 * 2) Complex variables inequality

= September 6 = Reference_desk/Archives/Mathematics/2012 September 6


 * 1) Implementing an algorithm to generate  Proth Primes
 * 2) Polynomial equations
 * 3) More on "Project Euler question" from Sept 5
 * 4) surjective Homomorphism

= September 7 = Reference_desk/Archives/Mathematics/2012 September 7


 * 1) Hyperbolic Trig?
 * 2) Rocket fin alignment
 * 3) Axiom of empty set
 * 4) Name of set

= September 8 = Reference_desk/Archives/Mathematics/2012 September 8


 * 1) "excessive" shuffling
 * 2) Tesseract
 * 3) Star Trek Special Effect
 * 4) Extrapolating sums of powers
 * 5) Cube: 2 Hypercube

= September 9 = Reference_desk/Archives/Mathematics/2012 September 9


 * 1) Isomorphism between G/N x N ~= G
 * 2) Finding the constituent numbers in a list that add up to partial totals

= September 10 = Reference_desk/Archives/Mathematics/2012 September 10


 * 1) Matrix subgroup
 * 2) Standard metrics for quality of multi-objective optimization?
 * 3) What is a cross-over point in a rational funciton?

= September 11 = Reference_desk/Archives/Mathematics/2012 September 11


 * 1) A countanle $ pi - weight$
 * 2) R[X]/(X^2-1)

= September 12 = Reference_desk/Archives/Mathematics/2012 September 12


 * 1) Incompleteness of Arithmetic
 * 2) Gibbs phenomenon

= September 13 = Reference_desk/Archives/Mathematics/2012 September 13


 * 1) Irreducible nontrivial finite dimensional unitary representations of noncompact connected Lie groups operating on a complex vector space
 * 2) plotting relations

= September 14 = Reference_desk/Archives/Mathematics/2012 September 14


 * 1) Suspected fault in article on wikipedia
 * 2) Growth Dirichlet Kernel
 * 3) Regular structures in the prime spiral о_0

= September 15 = Reference_desk/Archives/Mathematics/2012 September 15


 * 1) connected graphs
 * 2) Recurrence relation

= September 16 = Reference_desk/Archives/Mathematics/2012 September 16


 * 1) Probability question
 * 2) Space battle with only one shot
 * 3) Root of cubic formula
 * 4) A problem with units

= September 17 = Reference_desk/Archives/Mathematics/2012 September 17


 * 1) L'Hopital's rule
 * 2) Definite integral from -1 to 1 of 1/x
 * 3) simple Differential equation
 * 4) Skewed distribution with given median, mean and SD
 * 5) When does additivity imply homogeneity?

= September 18 = Reference_desk/Archives/Mathematics/2012 September 18


 * 1) The continuum and cardinality
 * 2) Complexity class of minimalist pangram construction
 * 3) see humanities reference desk

= September 19 = Reference_desk/Archives/Mathematics/2012 September 19


 * 1) Cohen and the axiom of choice
 * 2) Solve this please
 * 3) Show that a series is not Absolutely convergent.
 * 4) The maze on today's main page.

= September 20 = Reference_desk/Archives/Mathematics/2012 September 20


 * 1) Lanchester's Law and Game Theory
 * 2) League problem
 * 3) x/y in IV quadrant, is the given ratio negative or positive?

= September 21 = Reference_desk/Archives/Mathematics/2012 September 21


 * 1) Integration of 1/x in Quadrant I
 * 2) Limits of Integration
 * 3) Inverse birthday problem
 * 4) cells within a table
 * 5) Friendship combinations
 * 6) nPr?

= September 22 = Reference_desk/Archives/Mathematics/2012 September 22


 * 1) a?
 * 2) Commutability of integration

= September 23 = Reference_desk/Archives/Mathematics/2012 September 23


 * 1) Seeking function
 * 2)  Topology Norm on a space over a complex field
 * 3) Cantor set and compactness
 * 4) Number of partitions

= September 24 = Reference_desk/Archives/Mathematics/2012 September 24


 * 1) something in Pythagoras tree (fractal)
 * 2) Parity of elements of a pythagorean triple

= September 25 = Reference_desk/Archives/Mathematics/2012 September 25


 * 1) a thousand coins a thousand times?
 * 2) Error in published paper?
 * 3) vectors and matrices
 * 4) Maximing product x*y under assumption x y<=A(B-x)(B-y)
 * 5) Show that a Fourier series converges at particular points

= September 26 = Reference_desk/Archives/Mathematics/2012 September 26


 * 1) Limits
 * 2) Representations of so(3;1) = Lorentz algebra

= September 27 = Reference_desk/Archives/Mathematics/2012 September 27


 * 1) mode
 * 2) Uniformly bounded
 * 3) Sigmoid function between two points

= September 28 = Reference_desk/Archives/Mathematics/2012 September 28


 * 1) Separation of Variables
 * 2) Integrating Hamilton's equations to find the Hamiltonian

= September 29 = Reference_desk/Archives/Mathematics/2012 September 29


 * 1) Solutions to Laplace's equation
 * 2) Legendre Polynomials

= September 30 = Reference_desk/Archives/Mathematics/2012 September 30


 * 1) Bin packing problem