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Johan's user avatar
Johan
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19 Answers

Score Activity Newest
14 votes
Accepted

Gerbes over finite fields

8 votes
Accepted

Does the strict henselization satisfy Going-Up?

7 votes
Accepted

Does $X\times Y$ have the resolution property if both $X$ and $Y$ have?

6 votes
Accepted

When is it possible to localize a scheme along a closed subscheme?

5 votes

Reference request: What is the definition of a quasi-finite morphism of algebraic stacks?

4 votes

Finitely generated modules over Noetherian local ring that become isomorphic after faithfully flat base change

4 votes

Is the perfection (perfect closure) presheaf a sheaf?

3 votes

Closed points of a closed subscheme of $\mathbb{P}^n$ over the residue field and the fraction field of a valuation ring $R$

3 votes
Accepted

Generic Galois alteration of an arithmetic model with semistable special fiber

3 votes

For an abelian scheme, $R^pf_* \Omega^q$ is locally free and its formation is compatible with any base change

3 votes

Base change under Galois cover

3 votes

Künneth formula for de Rham cohomology with respect to an integrable connection

2 votes
Accepted

Good prime ideals in tensor products of local rings

2 votes

Approximating ring maps of finite Tor-dimension

2 votes
Accepted

Morphisms on fibre products

2 votes

Valuations on tensor products

1 vote

Norm on tensor product of fields

1 vote

Base change of normalization map and scheme-theoretic surjectivity

1 vote
Accepted

Lifting of flat lci maps