Wikipedia:Reference desk/Archives/Mathematics/January 2012

= January 2 = Reference_desk/Archives/Mathematics/2012 January 2


 * 1) Exporting data from TI-Nspire Student Software

= January 3 = Reference_desk/Archives/Mathematics/2012 January 3


 * 1) Dowsing
 * 2) Model Theory and Category Theory
 * 3) Differentials and uncertainties

= January 4 = Reference_desk/Archives/Mathematics/2012 January 4


 * 1) Wikification of Rational point
 * 2) The founder of the pyramid of Giza
 * 3) Variables used for specific things

= January 5 = Reference_desk/Archives/Mathematics/2012 January 5


 * 1) Goodness of Fit
 * 2) Power series

= January 6 = Reference_desk/Archives/Mathematics/2012 January 6


 * 1) How did mathematicians figure out trigonometric raios?
 * 2) solving all quintics by algebraic means
 * 3) What would it cost to wall off Pakistan from Afghanistan?
 * 4) I need a mathematical function that scores 0 for "infinitely incorrect estimate" or "no answer" and 1 for "exactly precise answer"

= January 7 = Reference_desk/Archives/Mathematics/2012 January 7


 * 1) standard scrabble points
 * 2) Two- or three-dimensional chaotic system or map with at least two parameters

= January 8 = Reference_desk/Archives/Mathematics/2012 January 8


 * 1) Cardinality
 * 2) Four color theorem

= January 9 = Reference_desk/Archives/Mathematics/2012 January 9


 * 1) series acceleration

= January 11 = Reference_desk/Archives/Mathematics/2012 January 11


 * 1) How soon would a dishwasher pay for itself in savings?
 * 2) Polynomials
 * 3) Matrix multiplication on integers and overflow
 * 4) Rapid calculation of standard deviation in a time series

= January 12 = Reference_desk/Archives/Mathematics/2012 January 12


 * 1) Power series reloaded
 * 2) How advantageous is it to replace a paper-towel dispenser with a wall dryer?

= January 13 = Reference_desk/Archives/Mathematics/2012 January 13


 * 1) Help with integral
 * 2) zero to the power of complex numbers
 * 3) Is this true?

= January 14 = Reference_desk/Archives/Mathematics/2012 January 14


 * 1) Is there a complete axiom system for 3d real vectors without mentioning coordinates?
 * 2) final step in proof

= January 15 = Reference_desk/Archives/Mathematics/2012 January 15


 * 1) leibniz's idiot proof of the product rule
 * 2) Subfield of $mathbb{R}$ isomorphic to $mathbb{R}$?
 * 3) counterproof of four-color theorem rule

= January 16 = Reference_desk/Archives/Mathematics/2012 January 16


 * 1) Proving what a series converges to

= January 17 = Reference_desk/Archives/Mathematics/2012 January 17


 * 1) Find the values that satisfy the condition...
 * 2) Human in a looked room
 * 3) Jacobi ellipsoid

= January 19 = Reference_desk/Archives/Mathematics/2012 January 19


 * 1) Mathematical elegance?

= January 20 = Reference_desk/Archives/Mathematics/2012 January 20


 * 1) Derivative of log map on SE(3)
 * 2) Are these equations chaotic

= January 21 = Reference_desk/Archives/Mathematics/2012 January 21


 * 1) Use of prime numbers
 * 2) She can't be right, surely

= January 22 = Reference_desk/Archives/Mathematics/2012 January 22


 * 1) PI on Base n
 * 2) Proving a chord to be diameter
 * 3) t-test and Chi-squared Test

= January 23 = Reference_desk/Archives/Mathematics/2012 January 23


 * 1) Related probabilities

= January 24 = Reference_desk/Archives/Mathematics/2012 January 24


 * 1) E8 (mathematics)
 * 2) Looking for a graph theory term...
 * 3) Odds question

= January 25 = Reference_desk/Archives/Mathematics/2012 January 25


 * 1) number of non-isomorphic hamiltonian cycle on n-cubes?
 * 2) Itō calculus

= January 26 = Reference_desk/Archives/Mathematics/2012 January 26


 * 1) How can we join the definitions of entropy?
 * 2) Harmonic Sequences and Other Sequences (Mathematics)
 * 3) Average for individuals going in a different direction from the group average
 * 4) Probability problem
 * 5) Computing the Lerch

= January 29 = Reference_desk/Archives/Mathematics/2012 January 29


 * 1) Diophantine equation.
 * 2) Wolfram Alpha

= January 30 = Reference_desk/Archives/Mathematics/2012 January 30


 * 1) Was Galois Welsh?
 * 2) cube in perspective

= January 31 = Reference_desk/Archives/Mathematics/2012 January 31


 * 1) Calculating the spinning of the earth at the 39th parallel
 * 2) Galois extensions and inert prime ideals
 * 3) Simple probability questions
 * 4) Classical mathematical texts