It has not been possible to identify everyone, in particular some of the almost hidden faces.

First row

Joel Hass, Curt McMullen, Dennis Sullivan, Tim Cochran, Larry Siebenmann, Rob Kirby, Joan Birman, Bob Edwards, Cameron Gordon, Bob Gompf, Colin Rourke.

Second row

Hun Kim, Tatsuya Tsukamoto, Joanna Kania-Bartoszynska, John Bryant, Alan Durfee, Ted Turner, Rita Gitik, Abby Thompson, Michael Hirsch, Mike Freedman, David Gabai, Yoav Moriah.

Third row

Young Sik Huh, Hossein Abbaspour, Feng Luo, Iain Aitchison, Frank Quinn, Yongbin Ruan, Steve Bleiler, Richard Randell, Kent Orr, Louis Kauffman, Burak Ozbagci, Neville Temperley, ?, Danny Calegari, Jason Behrstock, Saul Schleimer, Greg Kuperberg.

Clockwise around the outside

Joel Hass, Hun Kim, Young Sik Huh, Sean Cleary, Dariusz Wilczynski, Xiao-Song Lin, Terry Lawson, Paul Kirk, Kasra Rafi, Grisha Mikhalkin, David Letscher, Hans Boden, Hessam Hamidi-Tehrani, Mladen Bestvina, Andrew Kricker, Roger Alperin, Ian Hambleton, Blake Mellor (hat), Mark Feighn, Xavier Leleu, Charles Thomas, Gyo Taek Jin, Dave Bachman, John Stallings, Jun O'Hara, Chris Herald, ?, Mike Veve, Peter Kahn (hat), ?, Chris Tuffley, Stephen Bigelow (hat), Saso Strle, Genevieve Walsh, Doug Zare, Andrew Casson, Patrick Shanahan, Ian Agol, Arthur Bartels, Marty Scharlemann, Peter Teichner, Jack Breslow, Carlo Petronio, ?, Joe Masters, Graham Taylor, Ki-Heon Yun, ?, Al Marden, Jennifer Schultens, Isabel Darcy, Yoav Moriah, Colin Rourke.

Those people not in the first three rows nor on the outside will be identified in overlapping clusters (coordinate charts) as follows:

Yuhan Lim is surrounded by (clockwise starting at 1am): Andrew Kricker, Oliver Dasbach, Yongbin Ruan, Hessam Hamidi-Tehrani, Mladen Bestvina.

Bert Wiest is surrounded by (clockwise starting at 1am): Xavier Leleu, Danny Ruberman, Richard Randell, Oliver Dasbach, Mark Feighn.

Danny Ruberman is surrounded by (clockwise): Charles Thomas, ?, Kent Orr, Ted Turner, Richard Randell, Bert Wiest, Xavier Leleu.

Larry Taylor is surrounded by (clockwise): Chris Herald, ?, Peter Kahn, Aaron Abrams, Louis Kauffman, Kent Orr, ?, Jun O'Hara.

Burak Ozbagci is surrounded by (clockwise): Peter Kahn, ?, Max Neumann, Abby Thompson, Rita Gitik, Louis Kauffman, Aaron Abrams.

Slava Krushkal is surrounded by (clockwise): Jim Conant, ?, Yoav Rieck, Max Neumann, ?, ?, Chris Tuffley.

Dan Knopf is surrounded by (clockwise): ?, ?, Michael Hirsch, Simon Willerton, Neville Temperley, ?, ?.

Ric Ancel is surrounded by (clockwise): Patrick Shanahan, Eric Klassen, John Etnyre, ?, Michael Hirsch, ?.

Terry Fuller is surrounded by (clockwise): Marty Scharlemann, Colin Adams, Danny Calegari, John Etnyre, Eric Klassen, Arthur Bartels.

Colin Adams is surrounded by (clockwise): Jack Breslow, Carlo Petronio, Zhenghan Wang, Mike Freedman, Danny Calegari, Terry Fuller, Marty Scharlemann, Peter Teichner.

Stavros Garoufalidis is surrounded by (clockwise): Joe Masters, David Gabai, Jason Behrstock, Zhenghan Wang, Carlo Petronio.

Saul Schleimer (hat) is surrounded by (clockwise): Ki-Heon Yun, ?, Isabel Darcy, Greg Kuperberg, David Gabai, ?.