User algori - MathOverflow

94 votes

1 answer

12k views

The mathematical theory of Feynman integrals

asked May 15, 2010 at 21:45

61 votes

2 answers

3k views

The topological analog of flatness?

asked Aug 10, 2010 at 3:15

59 votes

3 answers

6k views

Italian school of algebraic geometry and rigorous proofs

asked Mar 7, 2010 at 3:20

58 votes

2 answers

6k views

Polynomials having a common root with their derivatives

asked Jun 11, 2010 at 18:52

55 votes

3 answers

7k views

Kirby calculus and local moves

asked Jul 7, 2010 at 22:58

45 votes

6 answers

9k views

A geometric interpretation of the Levi-Civita connection?

asked Aug 1, 2010 at 7:20

36 votes

8 answers

5k views

Categorical construction of the category of schemes?

asked May 30, 2010 at 21:21

36 votes

4 answers

5k views

The Jouanolou trick

asked Dec 1, 2009 at 4:46

33 votes

8 answers

3k views

Noncommutative rational homotopy type

asked Dec 17, 2009 at 1:59

32 votes

2 answers

8k views

Large cardinal axioms and Grothendieck universes

asked Jan 24, 2010 at 1:21

32 votes

6 answers

8k views

Proof of the Reidemeister theorem

asked Feb 13, 2010 at 23:35

30 votes

3 answers

4k views

t-structures and higher categories?

asked Jul 4, 2010 at 17:59

29 votes

3 answers

5k views

Topologically distinct Calabi-Yau threefolds

asked Jan 19, 2010 at 5:25

28 votes

3 answers

3k views

A non-formal space with vanishing Massey products?

asked Jan 2, 2011 at 17:20

27 votes

4 answers

1k views

Conjuring phantoms by hand?

asked Sep 25, 2012 at 22:05

27 votes

2 answers

5k views

Cohomology of Lie groups and Lie algebras

asked Jan 13, 2010 at 22:17

27 votes

1 answer

3k views

Mixed Hodge structure on the rational homotopy type

asked Apr 21, 2010 at 15:17

25 votes

2 answers

3k views

Proofs of Kirby's theorem

asked Mar 2, 2010 at 11:12

25 votes

4 answers

3k views

Algorithmically unsolvable problems in topology

asked Jun 1, 2012 at 22:16

22 votes

3 answers

2k views

Cohomology of fibrations over the circle: how to compute the ring structure?

asked Jan 10, 2010 at 20:28

21 votes

7 answers

6k views

CW-structures and Morse functions: a reference request

asked Jan 10, 2010 at 22:59

19 votes

1 answer

1k views

Do chains and cochains know the same thing about the manifold?

asked Dec 21, 2009 at 4:03

19 votes

4 answers

3k views

A topological consequence of Riemann-Roch in the almost complex case

asked Jan 22, 2010 at 3:12

19 votes

2 answers

1k views

Lie algebra automorphisms and detecting knot orientation by Vassiliev invariants

asked Aug 27, 2010 at 2:20

18 votes

1 answer

3k views

Eichler-Shimura isomorphism and mixed Hodge theory

asked Dec 23, 2009 at 6:50

18 votes

1 answer

1k views

Fundamental groups of the spaces of rational functions

asked Jan 28, 2010 at 22:59

17 votes

1 answer

2k views

Hecke operators acting as correspondences?

asked Jun 2, 2010 at 21:48

16 votes

0 answers

380 views

Rational equivalence of smooth closed manifolds

asked Aug 29, 2022 at 20:31

15 votes

2 answers

1k views

Infinity de Rham quasi-isomorphism

asked Dec 31, 2009 at 19:12

15 votes

4 answers

1k views

Mappings of mapping class groups

asked Dec 3, 2009 at 0:12

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70 Questions

The mathematical theory of Feynman integrals

The topological analog of flatness?

Italian school of algebraic geometry and rigorous proofs

Polynomials having a common root with their derivatives

Kirby calculus and local moves

A geometric interpretation of the Levi-Civita connection?

Categorical construction of the category of schemes?

The Jouanolou trick

Noncommutative rational homotopy type

Large cardinal axioms and Grothendieck universes

Proof of the Reidemeister theorem

t-structures and higher categories?

Topologically distinct Calabi-Yau threefolds

A non-formal space with vanishing Massey products?

Conjuring phantoms by hand?

Cohomology of Lie groups and Lie algebras

Mixed Hodge structure on the rational homotopy type

Proofs of Kirby's theorem

Algorithmically unsolvable problems in topology

Cohomology of fibrations over the circle: how to compute the ring structure?

CW-structures and Morse functions: a reference request

Do chains and cochains know the same thing about the manifold?

A topological consequence of Riemann-Roch in the almost complex case

Lie algebra automorphisms and detecting knot orientation by Vassiliev invariants

Eichler-Shimura isomorphism and mixed Hodge theory

Fundamental groups of the spaces of rational functions

Hecke operators acting as correspondences?

Rational equivalence of smooth closed manifolds

Infinity de Rham quasi-isomorphism

Mappings of mapping class groups