Most of my work is in hyperbolic geometry and low-dimensional topology, although I am also interested in combinatorial, measurable and geometric group theory, foliations, and manifolds of nonpositive curvature. Here is my CV.

I co-organize the Geometry/Topology seminar at Boston College.

I am working on an online book Geometry in Two Dimensions that is suitable for students with only a multivariable calculus background. Currently, it discusses Euclidean, spherical and hyperbolic geometry, and touches on additional topics like scissors congruence, isoperimetric inequalities, and tilings.

Here are some scripts I wrote for an IBL Introduction to Proof course at Boston College, on logic, sets, induction, number theory, graph theory, functions and relations, and cardinality.

Currently, I am teaching a graduate course on Teichmuller theory, and the course MT4451: Euclidean and non-Euclidean geometry.