Tom Church

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Name	Tom Church
Member for	5 months
Seen	19 hours ago
Website	math.uchicago.edu/~tchurch
Location	Chicago
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Size of the smallest group not satisfying an identity.

Stokes' theorem etc., for non-Hausdorff manifolds

Does $Aut(Aut(…Aut(G)…))$ stabilize?

What can’t be described by categories?

Is there a finitely complete category with terminal object but NO subobject classifier?

Why are abelian groups amenable? (2)

The De Rham Cohomology of $\mathbb{R}^n - \mathbb{S}^k$

Looking for an introduction to orbifolds

What is a cup-product in group cohomology, and how does it relate to other branches of mathematics?

Gaussian curvature and mean curvature.

Reading list for basic differential geometry?

de Rham Cohomology of surfaces

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

Separators in the Category of Groups

Describing $SU(n,C)$

Largest hyperbolic disk embeddable in Euclidean 3-space?

A slick proof of the Bruhat Decomposition for GL_n(k)?

Subgroups of a group generated by a free semigroup

What is the first interesting theorem in (insert subject here)?

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

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

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