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Results tagged with combinatorial-identities
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user 35416
11
votes
A sum involving derivatives of Vandermonde
Here is a direct way to obtain Denis Serre's formula:
Just note that $x_i^k\frac{\partial^k}{\partial x_i^k}$ multiplies a monomial in the determinant by $\frac{r!}{(r-k)!}$ where $r$ is the power of …
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