Tom Church's user avatar
Tom Church's user avatar
Tom Church's user avatar
Tom Church
  • Member for 14 years, 5 months
  • Last seen more than 4 years ago
10 votes

H*(braid group, irrep of symmetric group) = ?

10 votes
Accepted

Rings that inject in all p-adic integers

10 votes
Accepted

Is an invertible biset necessarily a bitorsor?

10 votes
Accepted

Presentation of the monoid of surfaces

9 votes

Congruence subgroups as abstract groups

9 votes

Breaking up the free Lie algebra into GL irreps

8 votes

Maryam Mirzakhani's works

8 votes

$G_\mathbb{Z}$-homotopy type of rational Tits building $\Delta_{G, \mathbb{Q}}$

8 votes
Accepted

Conditions for the restriction $H^i(G,A)\to H^i(H,A)$ being surjective

8 votes

Relation between cohomology of ordered and unordered configuration spaces?

8 votes
Accepted

Automorphisms of $\pi_1$ induced by pseudo-Anosov maps

7 votes
Accepted

Can all G-connections on a Riemann surface X be induced by maps from X to G

6 votes

Are there results about the group of homeomorphisms of $(T^2-\{*,*\})$ up to isotopy?

6 votes

Largest hyperbolic disk embeddable in Euclidean 3-space?

6 votes

Gaussian curvature and mean curvature.

6 votes
Accepted

Separators in the Category of Groups

6 votes

Orbits of a symplectic group on its Lie algebra in the finite field case

6 votes
Accepted

$G$ cocycle split and trivialized to a coboundary in $J$, given a group homomorphism $J \overset{r}{\rightarrow} G$

5 votes

Action of an isomorphism in cohomology as the intersection with the class of the graph

5 votes
Accepted

A finite index subgroup of the Mapping Class Group

5 votes

Fundamental group of a compact space form.

4 votes

Knot complement diffeomorphism groups and embedding spaces

4 votes

de Rham Cohomology of surfaces

4 votes

Why are abelian groups amenable?

4 votes
Accepted

Precise definition/construction of $\text{Sym}(\text{Sym}^2)$?

3 votes

Number of A Subset of Monomials

3 votes
Accepted

Describing $SU(n,C)$

3 votes

Subgroups of a group generated by a free semigroup

3 votes

How much "Morse theory" can be accomplished given only a continuous transformation of a space?

2 votes

Weil's theorem about maps from a discrete group to a Lie group.