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Mathematics
Herri herri's user avatar
Herri herri's user avatar
Herri herri's user avatar
Herri herri
  • Member for 5 years, 2 months
  • Last seen more than 3 years ago
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12
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12
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12
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Top posts
8
Proving that ${n+3\choose 3} =\frac{n+2}{2}\sum_{k=1}^{n+1}\csc^2\frac{k\pi}{n+2}$
Jun 1, 2019
4
Degeneracy locus
Jul 11, 2019
2
How to show that $f(z)= 1/(z-a)$ is periodic with period $2\pi i$?
May 15, 2019
2
Why are polynomials in $[0,1]$ not isomorphic to $C[0,1]$.
May 15, 2019
1
Reduced and integral rings
May 15, 2019
1
On the definition of support of a scheme
Jun 3, 2019
0
Some naive question on birational equivalence
Jul 10, 2019
0
Closed subscheme of open subscheme
Nov 11, 2020