User Saal Hardali

93 votes

3 answers

11k views

What is homology anyway?

asked Jul 23, 2017 at 11:43

64 votes

1 answer

4k views

A dictionary of Characteristic classes and obstructions

asked Jan 23, 2016 at 21:32

45 votes

1 answer

2k views

Useful, non-trivial general theorems about morphisms of schemes

asked Mar 24, 2016 at 23:56

40 votes

1 answer

4k views

Roadmap to Geometric Representation Theory (leading to Langlands)?

asked Apr 11, 2016 at 18:50

30 votes

3 answers

4k views

DG categories in algebraic geometry - guide to the literature?

asked Jun 17, 2016 at 11:09

30 votes

8 answers

4k views

Applications of microlocal analysis?

asked Jan 4, 2017 at 16:04

28 votes

4 answers

3k views

Yoga of six functors for group representations?

asked Dec 27, 2016 at 21:48

25 votes

0 answers

753 views

What is a Green's function in the language of $\mathcal{D}$-modules?

asked May 22, 2017 at 16:49

24 votes

1 answer

1k views

About the abelian category of endofunctors of $\mathsf{Vect}$

asked May 16, 2017 at 20:20

23 votes

3 answers

2k views

Where does one go to learn about DG-algebras?

asked Jan 24, 2017 at 16:16

23 votes

4 answers

3k views

What is an "integrable hierarchy"? (to a mathematician)

asked Nov 11, 2017 at 14:14

21 votes

1 answer

2k views

Are all formal schemes really Ind-schemes?

asked Apr 15, 2016 at 19:54

21 votes

2 answers

2k views

How to stop worrying about enriched categories?

asked Mar 14, 2016 at 16:21

18 votes

3 answers

4k views

What is an "Instanton" in classical gauge theory? (to a mathematician)

asked Dec 30, 2017 at 10:09

17 votes

1 answer

3k views

Integrals of pullbacks and the Inverse function theorem(s?)

asked Feb 10, 2015 at 16:27

17 votes

1 answer

1k views

D-modules over algebraic curves VS differential Galois theory

asked Nov 23, 2016 at 13:38

17 votes

0 answers

649 views

Is there an Infinite dimensional sheaf theory for analysis on manifolds?

asked Aug 5, 2017 at 17:04

16 votes

1 answer

2k views

A careful roadtrip from locally symmetric spaces to algebra

asked Apr 24, 2016 at 15:01

15 votes

4 answers

3k views

Why should the tensor product of $\mathcal{D}_X$-modules over $\mathcal{O}_X$ be a $\mathcal{D}_X$-module?

asked Dec 20, 2016 at 21:14

15 votes

0 answers

1k views

Topological description of a blow up of a manifold along a submanifold

asked Nov 27, 2017 at 21:03

15 votes

1 answer

1k views

Can "ampleness" be detected inside the derived category?

asked Nov 12, 2017 at 22:49

15 votes

1 answer

748 views

Schur-Weyl duality and q-symmetric functions

asked Dec 16, 2018 at 11:21

14 votes

2 answers

781 views

Interpretation of the cohomology of compact lie groups and their classifying spaces in DAG?

asked Dec 17, 2017 at 0:18

14 votes

1 answer

515 views

Generalizing the Fourier isomorphism between Sobolev spaces and weighted $L^2$ spaces to (locally) compact groups?

asked Mar 6, 2018 at 16:59

14 votes

2 answers

1k views

"Correct" definition of stratified spaces and reference for constructible sheaves?

asked Jan 2, 2017 at 10:24

12 votes

1 answer

842 views

What kind of algebraic object is $\mathcal{D}_X$? (algebra of diifferential operators). What's special about modules over it?

asked Dec 21, 2016 at 16:21

12 votes

2 answers

887 views

Representation viewpoint on Chern–Weil (cohomology computations done with rep theory?)

asked Apr 29, 2016 at 14:46

12 votes

1 answer

853 views

The (fiber of the) cofiber of the fiber of a map of spaces

asked May 4, 2019 at 13:52

12 votes

0 answers

408 views

The $\infty$-category of $n$-manifolds and open embeddings determined homotopically from that of topological manifolds?

asked Oct 5, 2019 at 11:20

11 votes

1 answer

668 views

Is every continuous endomorphism of the Schwartz space a pseudo-differential operator?

asked Nov 3, 2017 at 15:19

Stack Exchange Network

109 Questions

What is homology anyway?

A dictionary of Characteristic classes and obstructions

Useful, non-trivial general theorems about morphisms of schemes

Roadmap to Geometric Representation Theory (leading to Langlands)?

DG categories in algebraic geometry - guide to the literature?

Applications of microlocal analysis?

Yoga of six functors for group representations?

What is a Green's function in the language of $\mathcal{D}$-modules?

About the abelian category of endofunctors of $\mathsf{Vect}$

Where does one go to learn about DG-algebras?

What is an "integrable hierarchy"? (to a mathematician)

Are all formal schemes really Ind-schemes?

How to stop worrying about enriched categories?

What is an "Instanton" in classical gauge theory? (to a mathematician)

Integrals of pullbacks and the Inverse function theorem(s?)

D-modules over algebraic curves VS differential Galois theory

Is there an Infinite dimensional sheaf theory for analysis on manifolds?

A careful roadtrip from locally symmetric spaces to algebra

Why should the tensor product of $\mathcal{D}_X$-modules over $\mathcal{O}_X$ be a $\mathcal{D}_X$-module?

Topological description of a blow up of a manifold along a submanifold

Can "ampleness" be detected inside the derived category?

Schur-Weyl duality and q-symmetric functions

Interpretation of the cohomology of compact lie groups and their classifying spaces in DAG?

Generalizing the Fourier isomorphism between Sobolev spaces and weighted $L^2$ spaces to (locally) compact groups?

"Correct" definition of stratified spaces and reference for constructible sheaves?

What kind of algebraic object is $\mathcal{D}_X$? (algebra of diifferential operators). What's special about modules over it?

Representation viewpoint on Chern–Weil (cohomology computations done with rep theory?)

The (fiber of the) cofiber of the fiber of a map of spaces

The $\infty$-category of $n$-manifolds and open embeddings determined homotopically from that of topological manifolds?

Is every continuous endomorphism of the Schwartz space a pseudo-differential operator?