I gave several lectures for the Program on Topology and Field Theories at the Center for Mathematics at Notre Dame, May 29-June 8, 2012. These lectures were video taped and posted online.

Lecture on the Unicity of the Homotopy of Higher Categories

Summer School Mini-course: Dualizability in Low-Dimensional Higher Category Theory

Lecture 1: Segal n-Categories and the Hypotheses of Baez and Dolan

Lecture 2: The Cobordism Hypothesis in Dimension One

Lecture 3: Higher Categories, Whitehead’s Exact Sequence, and the Cobordism Hypothesis in Dimension Two

Lecture 4: The Cobordism Hypothesis in Dimension Three