Wikipedia:Reference desk/Archives/Mathematics/December 2008

= December 1 = Reference_desk/Archives/Mathematics/2008 December 1


 * 1) Ackermann vs. tetration
 * 2) Unbounded utility
 * 3) Root at top of tree?
 * 4) Wireframe cube result

= December 2 = Reference_desk/Archives/Mathematics/2008 December 2


 * 1) Integral of graph, area = infinite, volume = finite?
 * 2) calculator for e
 * 3) Hyperbola and its Tangent Line
 * 4) Rearranging for x
 * 5) Group of a given order

= December 3 = Reference_desk/Archives/Mathematics/2008 December 3


 * 1) Trapezoid
 * 2) Ratio Proportion Problem
 * 3) Last two digits of a given index
 * 4) Standard Error of Products
 * 5) Basis of K(x)
 * 6) Is PlanetMath a valid source?
 * 7) Mathematical symbols like but with curved lines
 * 8) a*x=b (mod N)

= December 4 = Reference_desk/Archives/Mathematics/2008 December 4


 * 1) Reference_desk/Archives/Mathematics/2008 December 4
 * 2) A question in trivialogy.
 * 3) The finite fields are completely known

= December 5 = Reference_desk/Archives/Mathematics/2008 December 5


 * 1) How can you tell when you have correct digits of pi in equations with limits?
 * 2) statistical significance and Wikipedia:Arbitration Committee Elections December 2008/Results
 * 3) The Fabulous number i

= December 6 = Reference_desk/Archives/Mathematics/2008 December 6


 * 1) Inequality
 * 2) simple productivity calculation
 * 3) half functions
 * 4) Large Counterexamples and Proof by Induction

= December 7 = Reference_desk/Archives/Mathematics/2008 December 7


 * 1) Measure Theory
 * 2) Finding root-mean-square error for various methods
 * 3) Topology question
 * 4) Asking the gods of science for some help.
 * 5) How many groups are there of a particular order?
 * 6) Graph Sketching

= December 8 = Reference_desk/Archives/Mathematics/2008 December 8


 * 1) Infinite Box
 * 2) Elliptic Curve Cryptography Problem...
 * 3) Mallows' Cp
 * 4) Tax question
 * 5) Well-orderings of an aleph-1 set
 * 6) Mapping circle to heart shape curve and cardioid

= December 9 = Reference_desk/Archives/Mathematics/2008 December 9


 * 1) 6th grade math
 * 2) Proof
 * 3) Small but not finite fields

= December 10 = Reference_desk/Archives/Mathematics/2008 December 10


 * 1) Reciprocal of a graph
 * 2) Trigonometric identities
 * 3) Constructing a square around a Reuleaux triangle

= December 11 = Reference_desk/Archives/Mathematics/2008 December 11


 * 1) Functions
 * 2) Integration problem
 * 3) Reuleaux triangle
 * 4) Functions
 * 5) What is a "cz" a unit of?
 * 6) Reciprocal of a distance time graph

= December 11 = Reference_desk/Archives/Mathematics/2008 December 11


 * 1) Functions
 * 2) Integration problem
 * 3) Reuleaux triangle
 * 4) Functions
 * 5) What is a "cz" a unit of?
 * 6) Reciprocal of a distance time graph

= December 12 = Reference_desk/Archives/Mathematics/2008 December 12


 * 1) Smallest power with a given property
 * 2) Solution sought
 * 3) π = –i log(–1) ?
 * 4) Mathematics Question

= December 13 = Reference_desk/Archives/Mathematics/2008 December 13


 * 1) Is PlanetMath a valid source?
 * 2) Continued fraction
 * 3) Geometric shapes
 * 4) Measure Theory questions

= December 14 = Reference_desk/Archives/Mathematics/2008 December 14


 * 1) Decidability of God
 * 2) Partial differencial equation
 * 3) Fixed Points
 * 4) Closures and cluster points

= December 15 = Reference_desk/Archives/Mathematics/2008 December 15


 * 1) Integral question
 * 2) A property of the adjugate
 * 3) Problem
 * 4) Function of best fit for these couples; and a general question

= December 16 = Reference_desk/Archives/Mathematics/2008 December 16


 * 1) Category Theory question from Mac Lane's book
 * 2) How many subtractions do you need to obtain number 32, using the numbers 1, 5, 6, 7 and 9?

= December 17 = Reference_desk/Archives/Mathematics/2008 December 17


 * 1) Number of subsets of size k
 * 2) REVISITED:  How many subtractions do you need to obtain number 32, using the numbers 1, 5, 6, 7 and 9?
 * 3) Rational inequalities

= December 18 = Reference_desk/Archives/Mathematics/2008 December 18


 * 1) Simple probability

= December 19 = Reference_desk/Archives/Mathematics/2008 December 19


 * 1) Probability regularisation
 * 2) Boubaker polynomials

= December 20 = Reference_desk/Archives/Mathematics/2008 December 20


 * 1) Boubaker polynomials (2)
 * 2) List of exact values of trig functions
 * 3) On/Off Notation

= December 21 = Reference_desk/Archives/Mathematics/2008 December 21


 * 1) Feynman Restaurant Problem
 * 2) Socks in drawer problem
 * 3) Boubaker polynomials (3): Mr. Boubaker, please come and give your personal definition

= December 22 = Reference_desk/Archives/Mathematics/2008 December 22


 * 1) What is the factorial of a fraction and a fractionth triangular number?
 * 2) Refs for group theory: realizability as derived or frattini subgroup
 * 3) Probability

= December 23 = Reference_desk/Archives/Mathematics/2008 December 23


 * 1) 1 + 1 = 0?
 * 2) Latex with WinShell, regular expressions
 * 3) Determinants of a Non-Square Matrix!!!
 * 4) Angles of points on surface of sphere

= December 24 = Reference_desk/Archives/Mathematics/2008 December 24


 * 1) Derivation details
 * 2) Möbius strip
 * 3) Annuity
 * 4) Stirling's approximation and asymptotics

= December 26 = Reference_desk/Archives/Mathematics/2008 December 26


 * 1) inequality involving a sequence
 * 2) Relation between trigonometric functions and exponential / multiplicative reciprocal functions
 * 3) acromegly
 * 4) maths quiz
 * 5) maths quiz

= December 27 = Reference_desk/Archives/Mathematics/2008 December 27


 * 1) Square numbers

= December 28 = Reference_desk/Archives/Mathematics/2008 December 28


 * 1) math question

= December 29 = Reference_desk/Archives/Mathematics/2008 December 29


 * 1) Jet interpolation, or what?
 * 2) MY DOUBTS
 * 3) Summing 1's and 2's
 * 4) acromagaly chances
 * 5) on analytical geometry
 * 6) inverting pixels with convolution matrix
 * 7) Composition of polynomials is associative

= December 30 = Reference_desk/Archives/Mathematics/2008 December 30


 * 1) Factorization
 * 2) Hypersudoku question
 * 3) Polynomial
 * 4) Question concerning two integrals
 * 5) Reference_desk/Archives/Mathematics/2008 December 30
 * 6) Reference_desk/Archives/Mathematics/2008 December 30
 * 7) Collatz conjecture
 * 8) Triangle wave
 * 9) Trigonomic approximation revisited

= December 31 = Reference_desk/Archives/Mathematics/2008 December 31


 * 1) Proof that a function from the rationals to dyadic rationals is a bijection
 * 2) Uncountability of x S.T. f(x)=0
 * 3) Reference_desk/Archives/Mathematics/2008 December 31