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22 votes

2 answers

2k views

Applications of derived categories to "Traditional Algebraic Geometry"

asked Jan 27, 2019 at 21:21

9 votes

2 answers

746 views

Quotients of schemes by connected groups

asked Aug 31, 2022 at 8:08

7 votes

1 answer

352 views

Openness of flat locus in morphisms of local Noetherian rings

asked Sep 6, 2025 at 23:55

5 votes

2 answers

334 views

Algebraically closed ring extension

asked Feb 11, 2021 at 11:35

4 votes

0 answers

463 views

Dimension of dominant morphism of schemes

asked Jun 7, 2021 at 22:10

4 votes

1 answer

768 views

Algebraic de Rham cohomology for singular varieties

asked Feb 15, 2020 at 0:15

4 votes

0 answers

321 views

Completion of ring as direct limit

asked Aug 8, 2022 at 20:46

3 votes

1 answer

2k views

Chern character of coherent sheaf on singular variety

asked Oct 21, 2019 at 15:27

3 votes

0 answers

205 views

Pushout of schemes along submersions

asked Nov 25, 2020 at 9:33

2 votes

1 answer

334 views

Epi-mono factorisations in schemes via scheme-theoretic image

asked Sep 12, 2021 at 23:38

2 votes

0 answers

634 views

Different definitions of local complete intersection

asked Apr 28, 2020 at 9:06

2 votes

1 answer

316 views

Sheaves which are locally free on subschemes of dimension zero

asked Apr 18, 2024 at 17:11

1 vote

0 answers

228 views

Smooth surjective morphism to integral scheme

asked Nov 11, 2022 at 15:26

1 vote

2 answers

421 views

Completions of non-Noetherian rings with respect to finitely generated ideal

asked Feb 1, 2023 at 14:41

1 vote

0 answers

242 views

Separable field extensions and base change

asked Jul 18, 2021 at 14:19

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15 Questions

Applications of derived categories to "Traditional Algebraic Geometry"

Quotients of schemes by connected groups

Openness of flat locus in morphisms of local Noetherian rings

Algebraically closed ring extension

Dimension of dominant morphism of schemes

Algebraic de Rham cohomology for singular varieties

Completion of ring as direct limit

Chern character of coherent sheaf on singular variety

Pushout of schemes along submersions

Epi-mono factorisations in schemes via scheme-theoretic image

Different definitions of local complete intersection

Sheaves which are locally free on subschemes of dimension zero

Smooth surjective morphism to integral scheme

Completions of non-Noetherian rings with respect to finitely generated ideal

Separable field extensions and base change