Wikipedia:Reference desk/Archives/Mathematics/November 2012

= November 1 = Reference_desk/Archives/Mathematics/2012 November 1


 * 1) if a^2 =1 in a ring
 * 2) Is there a name for the set of primes?

= November 2 = Reference_desk/Archives/Mathematics/2012 November 2


 * 1) Generalizing the birthday problem
 * 2) Integration
 * 3) History of knowledge of various geometric shapes

= November 3 = Reference_desk/Archives/Mathematics/2012 November 3


 * 1) More or less?
 * 2) I don't like heating the atmosphere to produce bitcoins

= November 4 = Reference_desk/Archives/Mathematics/2012 November 4


 * 1) "Random article" chances of landing on a football-related page.
 * 2) more odd than even natural numbers?

= November 5 = Reference_desk/Archives/Mathematics/2012 November 5


 * 1) Teach integration
 * 2) localization

= November 6 = Reference_desk/Archives/Mathematics/2012 November 6


 * 1) algebra inequality
 * 2) Derivative word problems
 * 3) integration problem
 * 4) Semi-protection statistics
 * 5) File:Sinusoidal_spirals.svg

= November 7 = Reference_desk/Archives/Mathematics/2012 November 7


 * 1) bitcoin alternative strategies
 * 2) Square Tile Maps and Existence of Adjacent Tiles Equidistant from a given Tile
 * 3) Prime counting function

= November 8 = Reference_desk/Archives/Mathematics/2012 November 8


 * 1) Perfect circles

= November 9 = Reference_desk/Archives/Mathematics/2012 November 9


 * 1) Definitions of logarithmic and trigonometric functions

= November 10 = Reference_desk/Archives/Mathematics/2012 November 10


 * 1) Conway puzzle
 * 2) Euler axis/angle to Tait–Bryan angles (yaw, pitch, roll) conversion

= November 11 = Reference_desk/Archives/Mathematics/2012 November 11


 * 1) Calculus notation
 * 2) Explicit solution that gives the nth Harmonic number
 * 3) What does f ⊑ g mean?
 * 4) Fibonacci numbers

= November 12 = Reference_desk/Archives/Mathematics/2012 November 12


 * 1) Lagrangian density

= November 13 = Reference_desk/Archives/Mathematics/2012 November 13


 * 1) General algorithm for finding quotient rings.

= November 14 = Reference_desk/Archives/Mathematics/2012 November 14


 * 1) 2012x2015

= November 15 = Reference_desk/Archives/Mathematics/2012 November 15


 * 1) Logic puzzle questions
 * 2) Algebra questions of a certain type.
 * 3) Statistical analysis of exam passes
 * 4) Property of the parabola
 * 5) Transitive actions
 * 6) Rings.
 * 7) Is any conditional probability a Bayesian probability?

= November 16 = Reference_desk/Archives/Mathematics/2012 November 16


 * 1) I have question about prices and gains
 * 2) Is this an application of the correspondence theorem?
 * 3) Probability that someone born in 1865 was still alive in 1945
 * 4) Chaos
 * 5) Square root of 2

= November 17 = Reference_desk/Archives/Mathematics/2012 November 17


 * 1) applie mathematics
 * 2) installment calculation  in simple interest problems
 * 3) solve for x using log function 7^(x+3)=3^x
 * 4) express given eqn in simplest form w/only positive exponents

= November 19 = Reference_desk/Archives/Mathematics/2012 November 19


 * 1) Normal subgroups and bijection

= November 20 = Reference_desk/Archives/Mathematics/2012 November 20


 * 1) Hilbert space
 * 2) Dispute over election percentages
 * 3) Circle packing in a square
 * 4) Guide to pronouncing (saying) mathematics in German
 * 5) Inclusion

= November 21 = Reference_desk/Archives/Mathematics/2012 November 21


 * 1) Antiderivative of the Weierstrass function
 * 2) why is arithmetic meaningful

= November 24 = Reference_desk/Archives/Mathematics/2012 November 24


 * 1) set of equivalence relations
 * 2) Statistics
 * 3) Calculating vector cross products

= November 25 = Reference_desk/Archives/Mathematics/2012 November 25


 * 1) Fractal/continuum exterior product?
 * 2) complex analysis
 * 3) complex analysis (part 2)

= November 26 = Reference_desk/Archives/Mathematics/2012 November 26


 * 1) Can anyone tell me what the full sine rule (including 2r) is? thanks.

= November 27 = Reference_desk/Archives/Mathematics/2012 November 27


 * 1) I Can't Post!!!

= November 28 = Reference_desk/Archives/Mathematics/2012 November 28


 * 1) Generating correlated non-normal random variables
 * 2) Request for Help Deriving the Formula Describing the Probability that a Set of Event Outcomes Might Occur for Make-Up Homework
 * 3) Calculating an invariant ellipse

= November 29 = Reference_desk/Archives/Mathematics/2012 November 29


 * 1) Reflected image of a point in a plane, R^3

= November 30 = Reference_desk/Archives/Mathematics/2012 November 30


 * 1) the R^2 of (X,Y) aggregated samples is much larger than the R^2 of individual samples of (X,Y)
 * 2) Martingale system works if you have more than 50% of winning?
 * 3) Regression estimators on X as a function of Y  have a much smaller confidence interval (spread) than Y as a function of X