UCLA Topology Group

People History Seminars Links

 Research interests
Robert Brown Algebraic topology, Fixed point theory
Michael Hill Algebraic topology
Ko Honda Contact geometry, Symplectic geometry
Ciprian Manolescu Gauge theory, Symplectic geometry, Low-dimensional topology
Sucharit Sarkar Low-dimensional topology

Michael Andrews Algebraic topology
James Cameron Algebraic topology
Sherry Gong Low-dimensional topology, Gauge theory
Marco Marengon Low-dimensional topology
Clover May Algebraic topology
Aaron Royer Algebraic topology
Jonathan Rubin Algebraic topology
Michael Willis Low-dimensional topology, Categorification

Graduate students:

David Boozer

Christian Carrick

Austin Christian

Haofei Fan

Alexander Frederick

Robert Housden

Sangjin Lee

Michael Miller

Ikshu Neithalath

Bar Roytman

Andrew Smith


Robert Edwards

Regular visitors:

Ian Ferris

Dan Gottlieb

Kevin Iga

Phil Martens

Faculty in related fields:

Paul Balmer

Kefeng Liu

Gang Liu

Christian Haesemeyer

Igor Pak

Peter Petersen

Raphael Rouquier

Burt Totaro


Topological research at UCLA began with the arrival of Robert Sorgenfrey in 1942, soon after he earned a Ph. D. at the University of Texas under the legendary topologist R. L. Moore. High points in the research accomplishments of topologists at UCLA include the solution by Robion Kirby, who was at UCLA from 1965 to 1971, (with Laurence Siebenmann) of four of the seven problems listed by John Milnor in 1963 as the most important in topology at that time. Kirby first presented his famous "torus trick", the key to the solutions, in a UCLA seminar in the summer of 1968. Another of the Milnor problems, the Double Suspension Conjecture was solved by Robert Edwards, who came to UCLA in 1970 and remained here until his retirement in 2006. The accomplishments of Allan Hatcher, who was at UCLA from 1976 until 1984, include the proof of the Smale Conjecture (published in 1983).

About 70 students, supervised by twelve advisors, have received Ph. D. degrees from UCLA for dissertations on topological subjects.


We run a weekly in-house Topology Seminar, on Fridays at 3pm. We typically choose a topic each quarter, and the group members take turns in giving lectures about that subject. Recent topics have included: the Casson invariant; Khovanov homology; Khovanov-Rozansky homology; combinatorial Heegaard Floer homology via grid diagrams; rational homotopy theory; intersection cohomology; Reshetikhin-Turaev-Witten invariants.

In addition, we have a monthly Joint UCLA / USC / Caltech Topology Seminar, where we invite outside speakers to talk about current research developments.

Other seminars of interest:

  • USC Geometry / Topology Seminar

  • Caltech Geometry and Topology Seminar


  • Topology (on Wikipedia)
  • Low dimensional topology (on Wikipedia)
  • Knot Atlas
  • Table of Knot Invariants