Wikipedia:Reference desk/Archives/Mathematics/September 2019

= September 1 = Reference_desk/Archives/Mathematics/2019 September 1


 * 1) Central binomial coefficient difficult proof

= September 3 = Reference_desk/Archives/Mathematics/2019 September 3


 * 1) Kummer transformation

= September 9 = Reference_desk/Archives/Mathematics/2019 September 9


 * 1) identify mathematicians

= September 12 = Reference_desk/Archives/Mathematics/2019 September 12


 * 1) Problem from splitting pills
 * 2) Continuous function sending every real number to itself or its opposite but neither even nor odd

= September 13 = Reference_desk/Archives/Mathematics/2019 September 13


 * 1) Symmetrical set Venn diagram
 * 2) Sphericity

= September 14 = Reference_desk/Archives/Mathematics/2019 September 14


 * 1) Fibonacci numbers and Friday the 13th

= September 15 = Reference_desk/Archives/Mathematics/2019 September 15


 * 1) Continuous function that is "even" at some points but "odd" at others

= September 19 = Reference_desk/Archives/Mathematics/2019 September 19


 * 1) Subtended angle
 * 2) Fundamental Theorem of Line Integrals
 * 3) Composite numbers whose divisors are all perfect squares plus one

= September 22 = Reference_desk/Archives/Mathematics/2019 September 22


 * 1) percentage

= September 24 = Reference_desk/Archives/Mathematics/2019 September 24


 * 1) significant figures

= September 25 = Reference_desk/Archives/Mathematics/2019 September 25


 * 1) Fast verification that elliptic-curve point multiplication gives (0,0)
 * 2) Smallest grid with four orientation and every possible 2x2 combination in it.

= September 26 = Reference_desk/Archives/Mathematics/2019 September 26


 * 1) Is there a standard textual method of describing a planar graph?

= September 28 = Reference_desk/Archives/Mathematics/2019 September 28


 * 1) Can formula such as this be represented mathematically by geometric shapes?
 * 2) random partitions of an interval