Sum over integers k from 1 to n of A(k)*e^(e^(2*i*pi/k)*x) is its own nth derivative, for all A.

Welcome to Less Wrong! (2010-2011)

by orthonormal 1 min read12th Aug 2010805 comments

42


This post has too many comments to show them all at once! Newcomers, please proceed in an orderly fashion to the newest welcome thread.