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Special functions, orthogonal polynomials, harmonic analysis, ordinary differential equations (ODE's), differential relations, calculus of variations, approximations, expansions, asymptotics.

22 votes

A gamma function identity

This is merely a variation of your own proof, Matt, but I believe it makes things clearer. The first step is to define $c:=1-a-b$. Then, your identity takes the form $\dfrac{\Gamma\left(b\right)\Gam …
darij grinberg's user avatar
1 vote

Rolle's theorem in n dimensions

EDIT: The following solution is incomplete. We need to make sure that if $F^{\prime}\left(t\right)$, $F^{\prime\prime}\left(t\right)$, ..., $F^{\left(n-1\right)}\left(t\right)$ are linearly dependent …
darij grinberg's user avatar