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user16117
  • Member for 1 year, 3 months
  • Last seen this week
  • sites.google.com/view/…
  • Espoo, Finland
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  • Mathematics
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About

Sucede que me canso de ser león...

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    May 6, 2021
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10
Give combinatorial a proof that $\binom{n}{2}^2=\binom{n}{2}+6\binom{n}{3}+6\binom{n}{4}$
9
Examples of Manifolds such that $\chi (X)=-3$
7
Proof of identity relating Prime-counting function and Stirling numbers of the second kind
7
Help in simplifying combinatorial sum $\frac{n!}{(n-k)!}-{1\over(n-k)!}{\sum _{m=1}^{k-1} (-1)^{m+1} (n-m)! S(k,k-m)}$
7
Prove that $(-1)^n \text{Laguerre}_n(2) \leq 1$.
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