user5262

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visits	member for	2 years, 4 months
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24 Questions

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9	$\mathrm{Ext}^n(\mathcal F, i_\mathcal G) =\mathrm{Ext}^n(i^\mathcal F,\mathcal G)$?
8	étale cohomology
6	effective Cartier divisor is trivial
5	$\operatorname{Hom}(Z_p, Z_p) = Z_p$?
5	showing locally that a diagram commutes

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606 Reputation

+5	symmetric algebra
+10	question regarding Waterhouse, affine group schemes
+5	$\mathrm{Ext}^n(\mathcal F, i_\mathcal G) =\mathrm{Ext}^n(i^\mathcal F,\mathcal G)$?
-2	Localization of a ring at a height $1$ prime ideal is a valuation ring?

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3 Answers

votes activity newest

11	What are the least sets of generators for $S_n$
1	$\left[G:H\cap K\right]=\left[G:H\right]\left[G:K\right]$ if $\left[G:H\right],\left[G:K\right]$ are coprime
0	Étale cohomology of projective space

18 Tags

12 group-theory × 3	0 commutative-algebra × 8
12 homework × 2	0 cohomology × 3
11 symmetric-groups	0 etale-cohomology × 2
11 finite-groups	0 algebraic-groups
0 algebraic-geometry × 15	0 homotopy-theory

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2 Accounts

$Mathematics Stack Exchange$	Mathematics	606 rep	39
	Stack Overflow	144 rep	4

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Yearling × 2	Editor
Custodian	Commentator
Enlightened	Tumbleweed
Nice Answer	Supporter
Teacher	Student

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