Wikipedia:Reference desk/Archives/Mathematics/January 2015

= January 2 = Reference_desk/Archives/Mathematics/2015 January 2


 * 1) Dimension of C(R) as a vector space over R
 * 2) Group theory question
 * 3) Intersection of triangles in higher dimensions

= January 4 = Reference_desk/Archives/Mathematics/2015 January 4


 * 1) Coupon-collector problem with packages of distinct coupons
 * 2) Is every power series representation of a function a Taylor series?

= January 5 = Reference_desk/Archives/Mathematics/2015 January 5


 * 1) Reverse Polish Notation
 * 2) Fermat point of spherical triangles

= January 6 = Reference_desk/Archives/Mathematics/2015 January 6


 * 1) Area moment of inertia about y axis

= January 7 = Reference_desk/Archives/Mathematics/2015 January 7


 * 1) is this a sound proof?

= January 8 = Reference_desk/Archives/Mathematics/2015 January 8


 * 1) Group Theory Question
 * 2) Number of edges in an nxnxn cube

= January 10 = Reference_desk/Archives/Mathematics/2015 January 10


 * 1) Explain this plot used in ECC

= January 12 = Reference_desk/Archives/Mathematics/2015 January 12


 * 1) Sharpness of a theorem
 * 2) Fractions

= January 14 = Reference_desk/Archives/Mathematics/2015 January 14


 * 1) Value at risk
 * 2) Comment requested on a power series solution
 * 3) Normal distribution question

= January 15 = Reference_desk/Archives/Mathematics/2015 January 15


 * 1) Coefficients of polynomial
 * 2) what does 'one-way functions may not exist' mean in practice? There is no bounds at all?
 * 3) Calculate p-values of PCR-estimator
 * 4) Logic

= January 16 = Reference_desk/Archives/Mathematics/2015 January 16


 * 1) +10% and -10%
 * 2) Modified Snakes and Ladders strategy

= January 17 = Reference_desk/Archives/Mathematics/2015 January 17


 * 1) mental arithmetic - how are you supposed to find a reciprocal quickly

= January 19 = Reference_desk/Archives/Mathematics/2015 January 19


 * 1) You vs. Sir Isaac Newton

= January 20 = Reference_desk/Archives/Mathematics/2015 January 20


 * 1) What is % of world coastline represent?

= January 21 = Reference_desk/Archives/Mathematics/2015 January 21


 * 1) Triangles and circumcenters

= January 23 = Reference_desk/Archives/Mathematics/2015 January 23


 * 1) Polyhedra
 * 2) How do you solve this equation? (find all possible values of x)
 * 3) A Maths Problem

= January 24 = Reference_desk/Archives/Mathematics/2015 January 24


 * 1) Why does lineal algebra have such a central role in many, if not all, math degrees?

= January 25 = Reference_desk/Archives/Mathematics/2015 January 25


 * 1) Factorization of $\sum_{n=0}^M~(-1)^n~n^k$
 * 2) Simplex coordinates starting with (0,0,0,...),(1,0,0,...)
 * 3) Question in applied linear algebra

= January 28 = Reference_desk/Archives/Mathematics/2015 January 28


 * 1) typical function
 * 2) Precedence of unary negation (unary -)

= January 31 = Reference_desk/Archives/Mathematics/2015 January 31


 * 1) Harmonic mean problem