irrational
131Pi — This article is about the number. For the Greek letter, see Pi (letter). For other uses, see Pi (disambiguation). The circumference of a ci …
132Apéry's theorem — In mathematics, Apéry s theorem is a result in number theory that states the number ζ(3) is irrational. That is, the number:zeta(3)=sum {n=1}^infty frac{1}{n^3}=frac{1}{1^3}+frac{1}{2^3}+frac{1}{3^3}+ldots = 1.2020569ldots cannot be written as a… …
