User Dmitri Pavlov

9 votes

1 answer

410 views

Reference for the Brown-Gersten property for smooth manifolds

asked Feb 2, 2017 at 15:22

9 votes

1 answer

832 views

Baire category theorem for uncountable unions

asked May 30, 2020 at 3:16

9 votes

3 answers

995 views

Reference for the Brown representability theorem in the case of locally presentable (∞,1)-categories

asked Feb 16, 2021 at 1:09

9 votes

1 answer

509 views

Maximal localizations of von Neumann algebras

asked Oct 22, 2009 at 20:30

9 votes

1 answer

975 views

Is there a mathematical explanation for the Aharonov-Casher effect?

asked Jul 15, 2012 at 18:38

8 votes

3 answers

2k views

Definition of a von Neumann algebra

asked Feb 5, 2010 at 7:06

8 votes

0 answers

381 views

Reference for maps whose pushouts are also homotopy pushouts

asked Sep 25, 2014 at 16:28

8 votes

0 answers

199 views

When are the categories of algebras over props (co)complete?

asked Oct 20, 2015 at 15:55

7 votes

0 answers

363 views

What is a morphism of ∞-sites?

asked Mar 20, 2020 at 22:19

7 votes

0 answers

806 views

Commutation of simplicial homotopy colimits and homotopy products in spaces

asked Sep 18, 2014 at 10:40

7 votes

0 answers

514 views

Is there a local projective model structure on simplicial sheaves? What are its fibrant objects?

asked Apr 28, 2013 at 13:43

7 votes

1 answer

347 views

Which dense inclusions of sites are ∞-dense?

asked Oct 30, 2013 at 16:09

7 votes

3 answers

659 views

Does one of the hexagon identities imply the other one?

asked Jan 13, 2011 at 2:22

6 votes

2 answers

902 views

Universal characterization and explicit description of elements of the group von Neumann algebra and the crossed product

asked May 9, 2010 at 3:32

6 votes

1 answer

818 views

Spectra and localizations of the category of topological spaces

asked Feb 24, 2010 at 3:21

6 votes

1 answer

738 views

Are there models for homotopy colimits and limits of simplicial sets that generalize Kan's suspension and loop functors?

asked Mar 25, 2014 at 21:20

6 votes

0 answers

395 views

Do all topological manifolds admit locally flat embeddings into R^n?

asked Jan 29, 2017 at 21:14

5 votes

1 answer

530 views

Reference for t-structures on stable model categories

asked Dec 12, 2015 at 16:34

5 votes

0 answers

449 views

Examples of nonstable ∞-categories in which sifted colimits commute with finite limits

asked Jul 26, 2016 at 15:38

5 votes

1 answer

776 views

Is there an analog of the Barratt-Eccles construction for group-like E_∞-spaces and E_∞-ring spaces?

asked Aug 30, 2014 at 18:18

5 votes

0 answers

225 views

Weak equivalences of left Bousfield localizations

asked Nov 30, 2013 at 18:24

5 votes

1 answer

725 views

Which E_∞-spaces are homotopy colimits of k-truncated E_∞-spaces?

asked Mar 19, 2013 at 23:02

5 votes

1 answer

333 views

One-parameter semigroups of bimodules

asked Nov 4, 2009 at 19:28

5 votes

0 answers

432 views

Is the pushout of smooth varieties along a smooth closed subvariety again a variety?

asked Dec 11, 2012 at 15:31

4 votes

1 answer

1k views

Can motivic E_∞-ring spectra be strictified to commutative motivic symmetric ring spectra?

asked Oct 30, 2013 at 17:42

4 votes

1 answer

216 views

Higher homotopy groups of Joyal fibrant replacements of 2-coskeletal simplicial sets

asked Sep 11, 2020 at 17:34

3 votes

1 answer

223 views

Can elements of Weil algebras be detected by maps into truncated symmetric algebras?

asked Apr 2, 2013 at 16:32

3 votes

0 answers

361 views

Which reflexive coequalizer diagrams are projectively cofibrant?

asked Jun 16, 2014 at 17:44

3 votes

0 answers

245 views

When is the product of an infinite family of simplicial sets also a homotopy product?

asked Oct 2, 2014 at 18:25

2 votes

0 answers

239 views

Are there analogs of smooth partitions of unity and good open covers for PL-manifolds?

asked Oct 28, 2014 at 19:34

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61 Questions

Reference for the Brown-Gersten property for smooth manifolds

Baire category theorem for uncountable unions

Reference for the Brown representability theorem in the case of locally presentable (∞,1)-categories

Maximal localizations of von Neumann algebras

Is there a mathematical explanation for the Aharonov-Casher effect?

Definition of a von Neumann algebra

Reference for maps whose pushouts are also homotopy pushouts

When are the categories of algebras over props (co)complete?

What is a morphism of ∞-sites?

Commutation of simplicial homotopy colimits and homotopy products in spaces

Is there a local projective model structure on simplicial sheaves? What are its fibrant objects?

Which dense inclusions of sites are ∞-dense?

Does one of the hexagon identities imply the other one?

Universal characterization and explicit description of elements of the group von Neumann algebra and the crossed product

Spectra and localizations of the category of topological spaces

Are there models for homotopy colimits and limits of simplicial sets that generalize Kan's suspension and loop functors?

Do all topological manifolds admit locally flat embeddings into R^n?

Reference for t-structures on stable model categories

Examples of nonstable ∞-categories in which sifted colimits commute with finite limits

Is there an analog of the Barratt-Eccles construction for group-like E_∞-spaces and E_∞-ring spaces?

Weak equivalences of left Bousfield localizations

Which E_∞-spaces are homotopy colimits of k-truncated E_∞-spaces?

One-parameter semigroups of bimodules

Is the pushout of smooth varieties along a smooth closed subvariety again a variety?

Can motivic E_∞-ring spectra be strictified to commutative motivic symmetric ring spectra?

Higher homotopy groups of Joyal fibrant replacements of 2-coskeletal simplicial sets

Can elements of Weil algebras be detected by maps into truncated symmetric algebras?

Which reflexive coequalizer diagrams are projectively cofibrant?

When is the product of an infinite family of simplicial sets also a homotopy product?

Are there analogs of smooth partitions of unity and good open covers for PL-manifolds?