anon
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Unregistered User
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May 14 |
comment |
extension classes and Galois cohomology Not in general. There's a spectral sequence $H^i(G,Ext^j(C,A))\implies Ext^n(C,A)$ where the left hand Ext is as abelian groups (if $C$ is finitely generated). See, for example, the first section of Milne's book on Arithmetic Duality Theorems. |
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May 3 |
answered | Images of Variety Morphisms |
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Apr 29 |
revised |
Elliptic curve over a scheme is a group scheme? added 254 characters in body |
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Apr 28 |
revised |
Tangent space in Algebraic geometry and Differential geometry Rewrote last sentence. |
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Apr 28 |
awarded | ● Editor |
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Apr 28 |
revised |
Tangent space in Algebraic geometry and Differential geometry fixed typo |
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Apr 28 |
answered | Tangent space in Algebraic geometry and Differential geometry |
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Apr 8 |
answered | Elliptic curve over a scheme is a group scheme? |
