Charlie Frohman's user avatar
Charlie Frohman's user avatar
Charlie Frohman's user avatar
Charlie Frohman
  • Member for 14 years, 1 month
  • Last seen more than a week ago
24 votes

How to motivate the skein relations?

17 votes

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

15 votes

Why don't quaternions have an overall phase?

14 votes

Is there a volume conjecture for closed 3-manifolds?

12 votes

Cobordism categories that don't involve manifolds

11 votes

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

10 votes

When does a CW-complex of dimension 2 embedd in $R^4$ ?

10 votes
Accepted

Trace identities and the Kauffman Bracket skein module

9 votes

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

9 votes

AJ conjecture for links

8 votes

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

8 votes

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

8 votes

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

8 votes
Accepted

Gauge theory construction of moduli of vector bundles

7 votes
Accepted

Fox differential calculus and the Alexander invariant of a link

7 votes

Which mathematicians have influenced you the most?

7 votes
Accepted

How To Calculate A Winding Number?

7 votes

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

6 votes
Accepted

Homology of Surfaces with Holes

6 votes
Accepted

pseudo-Anosov surface in three manifolds

6 votes
Accepted

Euler characteristics and operator indices as exponents for Laurent polynomials

6 votes

Probing a manifold with closed curves

5 votes

Old books still used

5 votes

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

5 votes

An inner product that makes the R-matrix unitary

5 votes

Is there an algebraic description of Yang-Mills measure?

5 votes

What is the Alexander polynomial of a point?

5 votes

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

4 votes

Upper half plane quotient by a discrete group

4 votes

De Rham cohomology and antiderivatives