Wikipedia:Reference desk/Archives/Mathematics/July 2010

= July 1 = Reference_desk/Archives/Mathematics/2010 July 1


 * 1) mathematical outcome to simple problem
 * 2) searching for a solution

= July 2 = Reference_desk/Archives/Mathematics/2010 July 2


 * 1) probability inequalities
 * 2) Examples of linear, nonlinear. or chaotic time series

= July 3 = Reference_desk/Archives/Mathematics/2010 July 3


 * 1) Notation for a  non-derivative with prime (')

= July 4 = Reference_desk/Archives/Mathematics/2010 July 4


 * 1) Second Order Differential Equations
 * 2) Partial Derivatives

= July 5 = Reference_desk/Archives/Mathematics/2010 July 5


 * 1) Clifford Algebra Question
 * 2) Integration

= July 6 = Reference_desk/Archives/Mathematics/2010 July 6


 * 1) 6 sided die different from the standard
 * 2) Equating an exponential function to a linear function
 * 3) Sum of exponentials
 * 4) Connections and Differential Forms
 * 5) Using the moment generating function to find E(y)

= July 7 = Reference_desk/Archives/Mathematics/2010 July 7


 * 1) Equation to solve
 * 2) Rank and stuff
 * 3) Quine's NF Set theory
 * 4) Calculating asymetric confidence intervals for truncated rating scale data
 * 5) LIFO v. FIFO
 * 6) Poisson distribution

= July 8 = Reference_desk/Archives/Mathematics/2010 July 8


 * 1) basic probability
 * 2) Kernel and Range of an Operator
 * 3) Non-Hamiltonian k-critical graph
 * 4) Rational numbers with integer sums
 * 5) probability
 * 6) Probabilistic proof of the squared triangular number identity.
 * 7) Tweaked Konigsberg

= July 9 = Reference_desk/Archives/Mathematics/2010 July 9


 * 1) Ackermann function
 * 2) Looking for a more intuitive way for expressing some property of some sets (and of a formula associated with them).
 * 3) Differential Forms
 * 4) speed cameras versus timestamped photos at 2 points.

= July 10 = Reference_desk/Archives/Mathematics/2010 July 10


 * 1) Online virtual Turing machine
 * 2) Cosets
 * 3) 1+1=1
 * 4) Girls, buses, cats AGAIN.

= July 11 = Reference_desk/Archives/Mathematics/2010 July 11


 * 1) Simple Probability
 * 2) ordinals
 * 3) Simplifying Radical Expressions
 * 4) Angle
 * 5) Automorphism group of a Hilbert space
 * 6) Mathematical induction
 * 7) Gabriel's Horn

= July 12 = Reference_desk/Archives/Mathematics/2010 July 12


 * 1) order of growth
 * 2) Calculus/Derivatives
 * 3) Trig question
 * 4) integers solutions

= July 13 = Reference_desk/Archives/Mathematics/2010 July 13


 * 1) the value of 0/0

= July 14 = Reference_desk/Archives/Mathematics/2010 July 14


 * 1) Free stuff
 * 2) Polish notation
 * 3) Rubik's cube group
 * 4) Help with a definite integral
 * 5) Denesting Radicals

= July 15 = Reference_desk/Archives/Mathematics/2010 July 15


 * 1) Testing the bias on a coin
 * 2) The arcsin for numbers >1
 * 3) Comparing two averages
 * 4) Theoretical computer science
 * 5) Implicit function theoem
 * 6) Riddle (of my own)

= July 16 = Reference_desk/Archives/Mathematics/2010 July 16


 * 1) Fixed Point
 * 2) Linear independence over complex numbers  of modular forms of different weights
 * 3) Millennium Prize Problems

= July 17 = Reference_desk/Archives/Mathematics/2010 July 17


 * 1) Half pennies on credit cards
 * 2) Greedy tricolorability
 * 3) Interest calculations
 * 4) ACT practice test question
 * 5) Algorithm to combine trees?
 * 6) Mathematical game

= July 18 = Reference_desk/Archives/Mathematics/2010 July 18


 * 1) Hyperbolic geometry
 * 2) Ancient Greek rejection of the fourth power

= July 19 = Reference_desk/Archives/Mathematics/2010 July 19


 * 1) Finding text in all of the universe
 * 2) "Fundamental theorem of arithmetic"?
 * 3) Vector Spaces
 * 4) 3D equivalent of an arc/circular sector

= July 20 = Reference_desk/Archives/Mathematics/2010 July 20


 * 1) Chess books
 * 2) Dot product
 * 3) y = dy/dx + x

= July 21 = Reference_desk/Archives/Mathematics/2010 July 21


 * 1) Planck's constant divided by wavelength
 * 2) are there any axioms you can't get rid of?
 * 3) what if there were a proof
 * 4) codimension?
 * 5) Setting up triangles for the ambiguous case

= July 22 = Reference_desk/Archives/Mathematics/2010 July 22


 * 1) Integration by substitution
 * 2) Dynamic Programming
 * 3) Barrow on Archimedes

= July 23 = Reference_desk/Archives/Mathematics/2010 July 23


 * 1) Mathematics
 * 2) Inverse Gabriel's Horn?
 * 3) kind of a weird question...
 * 4) advancing mathematics with little mathematics training

= July 24 = Reference_desk/Archives/Mathematics/2010 July 24


 * 1) List of Permutations in GAP
 * 2) Cardinality

= July 25 = Reference_desk/Archives/Mathematics/2010 July 25


 * 1) The probability that Bayes theorem is correct
 * 2) Nash Equilibrium for infinite game?

= July 26 = Reference_desk/Archives/Mathematics/2010 July 26


 * 1) Finding the inverse of a matrix
 * 2) LaTeX Symbols
 * 3) Boundary between two spatial regions

= July 27 = Reference_desk/Archives/Mathematics/2010 July 27


 * 1) Uniform mapping function
 * 2) Infinite sequence

= July 28 = Reference_desk/Archives/Mathematics/2010 July 28


 * 1) Hyperbolic reflection

= July 29 = Reference_desk/Archives/Mathematics/2010 July 29


 * 1) 65536 -- power of two without 1, 2, 4, or 8 in decimal representation
 * 2) Number of combinations
 * 3) Differential Geometry Book Recommendation
 * 4) Counting number of certain types of elements in symmetric group
 * 5) basic algebra
 * 6) Tetrahedron

= July 30 = Reference_desk/Archives/Mathematics/2010 July 30


 * 1) Bayesian inference – probability convergence to zero or 1.
 * 2) integrate sin(x)^2*cos(x)^2
 * 3) Tits group
 * 4) Determining an eigenvalue

= July 31 = Reference_desk/Archives/Mathematics/2010 July 31


 * 1) Axiom of choice
 * 2) problem with inequality
 * 3) Simplicial Homology
 * 4) Washing line mathematics
 * 5) Weighing scales
 * 6) Summation image