String topology of Poincar\'e duality groups

Homology of the mapping class group $\Gamma_{2,1}$ for surfaces of genus 2 with a boundary curve

Combinatorial Dehn surgery on cubed and Haken 3--manifolds

The mean curvature integral is invariant under bending

A brief survey of the deformation theory of Kleinian groups

The spectra $ko$ and $ku$ are not Thom spectra: \\an approach using THH

The bosonic birthday paradox

Decision problems for $3$-manifolds and their fundamental groups

Introduction to the Gopakumar--Vafa Large $N$ Duality