Mathematics professor at Rutgers University in Newark. Researcher in Topology, Geometry, and Geometric Group Theory. Currently specializing in the large scale geometry of $Out(F_n)$, the outer automorphism group of a free group of finite rank $n$.
25 Connected sum of topological manifolds feb 12 '13
19 Periodic automorphisms of free groups apr 25 '12
19 Actions on Sⁿ with quotient Sⁿ jul 25 '12
16 Manifolds with two coordinate charts dec 28 '12
13 Continuous notions with compelling discrete analogues aug 19 '12
13 Was the early calculus inconsistent? mar 20 '13