User Charlie Frohman

26 votes

How to motivate the skein relations?

answered Apr 5, 2010 at 22:44

17 votes

What should be taught in a 1st course on smooth manifolds?

answered Mar 20, 2011 at 20:36

15 votes

Why don't quaternions have an overall phase?

answered Mar 6, 2010 at 12:59

14 votes

Is there a volume conjecture for closed 3-manifolds?

answered Mar 6, 2010 at 20:31

12 votes

Cobordism categories that don't involve manifolds

answered Mar 26, 2011 at 23:16

11 votes

How to demonstrate $SO(3)$ is not simply connected?

answered Apr 29, 2010 at 13:14

10 votes

When does a CW-complex of dimension 2 embed in $\Bbb R^4$?

answered Mar 28, 2010 at 14:37

10 votes

Accepted

Trace identities and the Kauffman Bracket skein module

answered Jun 26, 2011 at 20:43

9 votes

What out-of-print books would you like to see re-printed?

answered Mar 24, 2010 at 23:04

9 votes

AJ conjecture for links

answered Jun 21, 2012 at 12:31

8 votes

Are compact submanifolds of "S X (0,1)" with one boundary component handlebodies, where S is a closed surface?

answered Mar 6, 2010 at 19:11

8 votes

$\operatorname{SL}_2(\mathbb R)$ Casson invariant?

answered Feb 28, 2010 at 17:08

8 votes

Why is a topology made up of 'open' sets?

answered Mar 23, 2010 at 23:16

8 votes

Accepted

Gauge theory construction of moduli of vector bundles

answered Mar 28, 2010 at 16:47

7 votes

Accepted

Fox differential calculus and the Alexander invariant of a link

answered Nov 14, 2011 at 11:18

7 votes

Which mathematicians have influenced you the most?

answered Mar 25, 2010 at 23:56

7 votes

Accepted

How To Calculate A Winding Number?

answered Mar 22, 2010 at 0:31

7 votes

How do you recover the structure of the upper half plane from its description as a coset space?

answered Mar 29, 2010 at 17:09

6 votes

Accepted

Homology of Surfaces with Holes

answered Mar 20, 2010 at 17:17

6 votes

Accepted

pseudo-Anosov surface in three manifolds

answered Nov 7, 2011 at 22:46

6 votes

Accepted

Euler characteristics and operator indices as exponents for Laurent polynomials

answered Mar 29, 2010 at 2:23

6 votes

Probing a manifold with closed curves

answered Mar 14, 2013 at 18:57

5 votes

Is the pure braid group on three strands generated as a normal subgroup of the braid group by the six-crossing braid?

answered Apr 13, 2010 at 0:10

5 votes

An inner product that makes the R-matrix unitary

answered Apr 14, 2010 at 12:33

5 votes

3-manifold with torus boundary with trivial "peripheral ideal"?

answered Jul 10, 2010 at 2:41

5 votes

Is there an algebraic description of Yang-Mills measure?

answered Jul 4, 2011 at 3:34

5 votes

What is the Alexander polynomial of a point?

answered Mar 5, 2010 at 11:58

5 votes

Tautological bundle on G$(n,k)$ and Chern classes

answered Mar 7, 2010 at 21:34

4 votes

Upper half plane quotient by a discrete group

answered Mar 29, 2010 at 21:15

4 votes

De Rham cohomology and antiderivatives

answered Mar 30, 2010 at 17:53

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42 Answers

How to motivate the skein relations?

What should be taught in a 1st course on smooth manifolds?

Why don't quaternions have an overall phase?

Is there a volume conjecture for closed 3-manifolds?

Cobordism categories that don't involve manifolds

How to demonstrate $SO(3)$ is not simply connected?

When does a CW-complex of dimension 2 embed in $\Bbb R^4$?

Trace identities and the Kauffman Bracket skein module

What out-of-print books would you like to see re-printed?

AJ conjecture for links

Are compact submanifolds of "S X (0,1)" with one boundary component handlebodies, where S is a closed surface?

$\operatorname{SL}_2(\mathbb R)$ Casson invariant?

Why is a topology made up of 'open' sets?

Gauge theory construction of moduli of vector bundles

Fox differential calculus and the Alexander invariant of a link

Which mathematicians have influenced you the most?

How To Calculate A Winding Number?

How do you recover the structure of the upper half plane from its description as a coset space?

Homology of Surfaces with Holes

pseudo-Anosov surface in three manifolds

Euler characteristics and operator indices as exponents for Laurent polynomials

Probing a manifold with closed curves

Is the pure braid group on three strands generated as a normal subgroup of the braid group by the six-crossing braid?

An inner product that makes the R-matrix unitary

3-manifold with torus boundary with trivial "peripheral ideal"?

Is there an algebraic description of Yang-Mills measure?

What is the Alexander polynomial of a point?

Tautological bundle on G$(n,k)$ and Chern classes

Upper half plane quotient by a discrete group

De Rham cohomology and antiderivatives