User Leonid Positselski

25 votes

1 answer

2k views

Locally presentable abelian categories with enough injective objects

asked Dec 28, 2017 at 0:43

24 votes

1 answer

2k views

Sums of injective modules, products of projective modules?

asked Nov 30, 2009 at 14:47

21 votes

0 answers

1k views

Homotopy flat DG-modules

asked Sep 26, 2010 at 16:53

16 votes

1 answer

1k views

Motivic cohomology with finite coefficients for singular varieties

asked Dec 7, 2010 at 22:29

15 votes

6 answers

3k views

References for Harish-Chandra pairs and modules, category "O"?

asked Nov 26, 2009 at 23:10

13 votes

1 answer

1k views

Grothendieck topologies, Mayer-Vietoris, and points

asked Oct 24, 2010 at 0:46

10 votes

0 answers

1k views

Complexes of representations with complementary central charges

asked Nov 27, 2009 at 0:40

10 votes

1 answer

744 views

Stable motivic cohomology with finite coefficients?

asked Dec 30, 2010 at 1:41

8 votes

3 answers

1k views

References for theorem about unipotent algebraic groups in char=0?

asked Jan 4, 2010 at 19:55

8 votes

1 answer

830 views

Topological groups in which all subgroups are closed

asked Dec 2, 2020 at 17:45

7 votes

3 answers

783 views

Exact sequences of permutational representations?

asked Dec 4, 2009 at 19:12

7 votes

1 answer

912 views

The Mittag-Leffler condition as necessary and sufficient

asked May 26, 2017 at 14:30

6 votes

1 answer

650 views

Finitely-affine morphisms; cohomological dimension of schemes

asked Nov 11, 2012 at 16:21

6 votes

3 answers

1k views

Radical generation of ideals in Noetherian rings

asked Nov 13, 2012 at 1:24

5 votes

1 answer

2k views

Zariski sheaves lifted to etale topology

asked Nov 5, 2010 at 17:53

5 votes

4 answers

660 views

Relative version of Hilbert syzygy theorem

asked May 20, 2021 at 23:47

5 votes

1 answer

248 views

Artin-Rees lemma for multiplicative subsets?

asked Jul 12, 2021 at 20:01

4 votes

1 answer

270 views

Compact, not local uniform convergence of sequences of functions on the rationals

asked Jan 12, 2016 at 8:46

4 votes

1 answer

339 views

Coreflective subcategories in Grothendieck/locally presentable categories

asked Feb 29, 2020 at 14:48

3 votes

0 answers

1k views

Etale cohomology of regular local rings

asked Nov 3, 2010 at 14:02

3 votes

0 answers

111 views

Modules over the unipotent subalgebra as direct summands of modules over a semisimple Lie algebra

asked Mar 30, 2023 at 22:40

2 votes

0 answers

408 views

Complete topological groups in which all subgroups are closed

asked Dec 2, 2020 at 19:18

1 vote

0 answers

322 views

Topology where surjective morphisms of finite presentation are coverings

asked Jun 27, 2017 at 15:26

Stack Exchange Network

23 Questions

Locally presentable abelian categories with enough injective objects

Sums of injective modules, products of projective modules?

Homotopy flat DG-modules

Motivic cohomology with finite coefficients for singular varieties

References for Harish-Chandra pairs and modules, category "O"?

Grothendieck topologies, Mayer-Vietoris, and points

Complexes of representations with complementary central charges

Stable motivic cohomology with finite coefficients?

References for theorem about unipotent algebraic groups in char=0?

Topological groups in which all subgroups are closed

Exact sequences of permutational representations?

The Mittag-Leffler condition as necessary and sufficient

Finitely-affine morphisms; cohomological dimension of schemes

Radical generation of ideals in Noetherian rings

Zariski sheaves lifted to etale topology

Relative version of Hilbert syzygy theorem

Artin-Rees lemma for multiplicative subsets?

Compact, not local uniform convergence of sequences of functions on the rationals

Coreflective subcategories in Grothendieck/locally presentable categories

Etale cohomology of regular local rings

Modules over the unipotent subalgebra as direct summands of modules over a semisimple Lie algebra

Complete topological groups in which all subgroups are closed

Topology where surjective morphisms of finite presentation are coverings