Mcmullen in front of blackboard

The Circle at Infinity: An International Colloquium in Honor of Curtis T. McMullen


View Calendar
June 15, 2022 - June 17, 2022
Science Center Hall C
Address: 1 Oxford Street, Cambridge, MA 02138 USA

Conference Poster

View photos from the colloquium here.

Confirmed speakers

Serge Cantat, Université de Rennes I
Danny Calegari, University of Chicago
Laura DeMarco, Harvard University
Benson Farb, University of Chicago
Michael Freedman, Microsoft
John Hubbard, Cornell University and Unversité de Provence
Hee Oh, Yale University
Peter Sarnak, Princeton University
Dennis Sullivan, Stony Brook University and CUNY Graduate Center
Anton Zorich, CNRS-Université Pierre et Marie Curie


Download PDF for a detailed schedule of lectures and events.

Wednesday, June 15 Thursday, June 16 Friday, June 17
9:20 a.m. - 9:50 a.m. | Morning Refreshments 9:30 a.m. - 10 a.m. | Morning Refreshments 9:30 a.m. - 10 a.m. | Morning Refreshments
9:50 a.m. - 10 a.m. | Opening Remarks 10 a.m. -11 a.m. | Hee Oh 10 a.m. -11 a.m. | Danny Calegari
10 a.m. - 11 a.m. | Benson Farb 11 a.m. - 11:30 a.m. | Coffee Break  11 a.m. - 11:30 a.m. | Coffee Break
11 a.m. - 11:30 a.m. | Coffee Break 11:30 a.m. - 12:30 p.m. | Michael Freedman  11:30 a.m. - 12:30 p.m. | Dennis Sullivan
11:30 a.m. - 12:30 p.m. | Peter Sarnak 12:30 p.m. - 2:30 p.m. | Lunch
12:30 p.m. - 2:30 p.m. | Lunch 2:30 p.m. - 3:30 p.m. | Laura DeMarco
2:30 p.m. - 3:30 p.m. | Serge Cantat 3:30 p.m. - 4 p.m. | Coffee Break
3:30 p.m. - 4 p.m. | Coffee Break 4 p.m. - 5 p.m. | Anton Zorich
4 p.m. - 5 p.m. | John Hubbard
5 p.m. - 7 p.m. | Reception

Please join us for a RECEPTION at 5:15 p.m. on Wednesday, June 15, at The Austine & Chilton McDonnell Common Room on the 4th floor of the Science Center.

Additional events for former students and invited guests on Saturday, June 18.

All lectures will take place in Hall C, Science Center, 1 Oxford Street, Cambridge, MA, 02138.


Everyone is welcome but please fill out the registration form before you come!

Register Here


Laura DeMarco (Harvard University)
Sarah Koch (University of Michigan)
Ronen Mukamel (Brigham and Women's Hospital and Harvard Medical School)
Kevin Pilgrim (Indiana University)


This conference is sponsored by Harvard University, Northwestern University, Rice University, Indiana University, the Clay Mathematics Institute, and the National Science Foundation.

The conference is supported by NSF Grant DMS-1952662. There are funds available for participant support, which will be allocated in keeping with NSF guideline – students, recent PhDs, underrepresented groups, and people with no other federal support get priority. Requests for support should be sent to the email address:

For all other inquiries, please write to

Harvard University is committed to maintaining a safe and healthy educational and work environment in which no member of the University community is, on the basis of sex, sexual orientation, or gender identity, excluded from participation in, denied the benefits of, or subjected to discrimination in any University program or activity. More information can be found here.