Wikipedia:Reference desk/Archives/Mathematics/November 2012

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November 1

Wikipedia: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

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 2

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

November 3

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 3

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

November 4

Wikipedia: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

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 5

1. Teach integration
2. localization

November 6

Wikipedia: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

Wikipedia: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

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 8

1. Perfect circles

November 9

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 9

1. Definitions of logarithmic and trigonometric functions

November 10

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 10

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

November 11

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 11

1. Calculus notation
2. Explicit solution that gives the n^th Harmonic number
3. What does f ⊑ g mean?
4. Fibonacci numbers

November 12

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 12

1. Lagrangian density

November 13

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 13

1. General algorithm for finding quotient rings.

November 14

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 14

1. 2012x2015

November 15

Wikipedia: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

Wikipedia: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

Wikipedia: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

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 19

1. Normal subgroups and bijection

November 20

Wikipedia: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

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 21

1. Antiderivative of the Weierstrass function
2. why is arithmetic meaningful

November 24

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 24

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

November 25

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 25

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

November 26

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 26

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

November 27

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 27

1. I Can't Post!!!

November 28

Wikipedia: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

Wikipedia:Reference_desk/Archives/Mathematics/2012 November 29

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

November 30

Wikipedia: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