Timeline for Binomial ID $\sum_{k=m}^p(-1)^{k+m}\binom{k}{m}\binom{n+p+1}{n+k+1}=\binom{n+p-m}{n}$

11 events

when toggle format	what		by	license	comment
Dec 5, 2016 at 12:38	vote	accept	Matt Majic
Dec 5, 2016 at 4:15	answer	added	Fedor Petrov		timeline score: 5
Dec 5, 2016 at 3:07	answer	added	T. Amdeberhan		timeline score: 7
Dec 5, 2016 at 3:06	answer	added	Noam D. Elkies		timeline score: 7
Dec 5, 2016 at 2:20	history	edited	Matt Majic		edited tags
Dec 5, 2016 at 0:23	comment	added	Matt Majic		They are the coefficients of an expansion of a solution to Laplace's equation in terms of solid spherical harmonics. The $n$ and $m$ are the separation constants that occur in for example the spherical harmonics $P_n^m(\cos\theta)\exp(im\phi)$
Dec 5, 2016 at 0:16	history	edited	GH from MO	CC BY-SA 3.0	deleted 30 characters in body
Dec 4, 2016 at 23:59	answer	added	Igor Rivin		timeline score: 0
Dec 4, 2016 at 23:58	comment	added	Yemon Choi		Where does this identity come from?
Dec 4, 2016 at 23:40	history	edited	Matt Majic	CC BY-SA 3.0	deleted 18 characters in body
Dec 4, 2016 at 23:28	history	asked	Matt Majic	CC BY-SA 3.0