American mathematician, professor at Oberlin College.
Co-authored "Markov Chains and Mixing Times" with David Levin and Yuval Peres, making the theory of Markov chain convergence accessible and rigorous.
The textbook provides the coupling and spectral methods used to analyze how fast graph-based computations like cyberank and the tri-kernel reach equilibrium.
Research focuses on combinatorics, probability, and algebraic structures in random processes.