These are transparencies and/or videos
for some talks I've given. They're in reverse chronological order.
Department of Mathematics, University of Wisconsin, April 5, 2018.
Western Sectional Meeting, U. C. Riverside, November 4-5, 2017.
Algebraic Topology 2017, Hokkaido University, August 8-12, 2017,
organized by Zin Arai, Pawe Dotko, Kathryn Hess, Yasuaki Hiraoka, Daisuke
Kishimoto, Hiroshi Kokubu, Ran Levi, Dai Tamaki and Toru Ohmoto.
Annual General Meeting,
Hong Kong Mathematical Society, May 20, 2017.
Biological Complexity: Can it be Quantified?, Beyond Center, February 2, 2017,
organized by Paul Davis, and
Complexity Group, April 20, 2017, organized by Aaron Goodman.
General Biology Seminar, Caltech, November 13, 2017.
Workshop on Compositionality,
Institute of Computing, December 6, 2016,
organized by Samson Abramsky, Lucien Hardy and Michael Mislove.
Statistical Physics, Information Processing and Biology,
Santa Fe Institute, November 16, 2016,
organized by David Krakauer, Michael Lachmann, Manfred Laubichler,
Peter Stadler, and David Wolpert.
Fe Institute, November 15, 2016.
St. Jerome University,
Waterloo, Canada, February 26, 2016,
organized by Benoit Charbonneau
and Alysia Kolentsis with help from Linda Carson.
Mathematical Society Winter Meeting,
Montreal, December 5, 2015.
November 18, 2015, hosted by Ray Gomez.
Warsaw, June 28-29, 2015, organized by Yves Guiraud, Phillipe
Malbos and Samuel Mimram.
Categorical Foundations of Network Theory,
Institute for Scientific Interchange, Turin, Italy, May 25-28, 2015,
organized by Jacob Biamonte and John Baez.
Workshop: Information and Entropy,
National Institute for Mathematical and Biological Synthesis,
Knoxville, Tennessee, April 8, 2015, organized by John Baez,
Marc Harper and John Harte.
Geometry-Analysis-Physics Seminar, Pennsylvania State University,
April 14, 2015, and
Mathematics Department, University of York, April 15, 2015.
Processing Seminar 2014, Montreal, December 10, 2014.
and Bio-Inspired Information Theory,
Banff International Research Station,
October 29, 2014, organized by Toby Berger, Andrew Eckford
and Peter Thomas.
Category Theory at the Crossroads,
Schloss Dagstuhl, May 2, 2014, organized by
Samson Abramsky, John Baez, Fabio Gadducci, and Viktor Winschel.
Quantum Field Theory Seminar, Mathematics Institute, University
of Oxford, March 4, 2014.
4 talks, Department of Computer Science, University of Oxford,
February 21 - March 10, 2014.
Topology Seminar, University of Oxford, February 24, 2014, and
Journées de la Fédération de recherche en mathématiques de Paris-Centre,
May 20, 2014, organized by Pierre-Louis Curien, Hugo Herbelin and
Mathematical Physics Seminar, Friedrich-Alexander-Universität Erlangen-Nürnberg, February 5, 2014.
SETI Institute, December 17, 2013, organized by Adrian Brown.
Balsillie School of International Affairs, University of Waterloo, October
25-26, 2013, organized by Simon Dalby.
Structures in China IV, Lanzhou University, August 14-16, 2013, and
Quantum Mathematics and Computation Symposium, University of Oxford,
October 1, 2013, organized by Samson Abramsky, Bob Coecke, Michael Colins,
Chris Douglas, Kobi Kremnitzer, Ulrike Tillmann and Jamie Vicary, and
Catégories, Logiques, Etc..., Université Paris Diderot, May 21, 2014, organized by Anatole Khelif.
Category-Theoretic Foundations of
Mathematics Workshop, U. C. Irvine, May 5, 2013, organized by Michael
Seminar, California State University, Northridge, April 26, 2013.
Institute, colloquium, April 17, 2013.
Stellenbosch University, October 30, 2012, organized by the South African Mathematical Society and the African Institute of Mathematics.
Exploratory Conference on the Mathematics of Biodiversity,
Centre de Recerca Matemàtica, Barcelona, July 5, 2012, organized by Tom Leinster and Richard Reeve.
Google, February 13, 2012, with help from Trevor Blackwell and Anybots.
CQT Annual Symposium 2011,
Centre for Quantum Technologies, December 7, 2011.
Combinatorics Seminar, Université du Québec à Montréal, July 8, 2011.
Mathematics Department Colloquium, Hong Kong University, March 23, 2011,
organized by Jiang-hua Lu.
Workshop on Geometry and Lie Groups,
Hong Kong University, March 25, 2011, organized by
Ngaiming Mok, Jiang-hua Lu and Siye Wu.
Quantum Theory and Gravitation,
ETH Zürich, June 16, 2011, organized
by Matthias Gaberdiel and Jürg Fröhlich.
Centre for Quantum Technologies, January 6, 2011, organized by Vlatko Vedral.
Quantum Physics and Logic 7,
Oxford University, May 29, 2010, organized by
Bob Coecke, Prakash Panangaden, and Peter Selinger.
Special Session on History and Philosophy of Mathematics,
2009 Fall Western Section Meeting of the AMS,
UC Riverside, November 7, 2009,
organized by Jim Tattersall and Shawnee McMurran.
Logic In Computer Science (LICS 2009),
UCLA, August 11-14, 2009, program chair Andrew Pitts.
Geometrisation from Representation Theory,
University of Glasgow, April 13-19, 2009, organized by
Iain Gordon, Nicolai Reshetikhin, Raphaël Rouquier and Catharina
Higher Structures in Topology
and Geometry II,
Courant Research Center Göttingen, February 5-6, 2009,
organized by Chenchang Zhu and Giorgio Trentinaglia.
2009 Joint Mathematics
Meetings, special session on Categorification
and Link Homology,
Washington D.C., January 7, 2009, organized by Aaron Lauda and Mikhail
The Rankin Lectures,
University of Glasgow, September 15-19, 2008,
supported by the Glasgow Mathematical Journal Trust.
Algebraic Topological Methods in Computer Science 2008
University of Paris Diderot, July 7, 2008, organized by
Eric Goubault, Emmanuel Haucourt, Michel Hirschowitz, Sanjeevi Krishnan and
Workshop on Categorical Groups,
Institut de Matemàtica de la Universitat de Barcelona, June 16,
2008, organized by Pilar Carrasco, Josep Elgueta, Joachim Kock and Antonio
Mathematical Innovation and the Search for an Underlying Intelligibility
of the Quantum World,
Princeton, October 3, 2007, organized by Hans Halvorson.
Workshop on Poisson
Geometry and Sigma Models,
Erwin Schrödinger Institute, August 22, 2007, organized by
Anton Alekseev, Henrique Bursztyn and Thomas Strobl.
2007 Abel Symposium,
Oslo, August 8, 2007, organized by
Eric Friedlander, Stefan Schwede and Graeme Segal,
Baas, Bjørn Dundas, Bjørn Jahren and John Rognes.
Talk at the
Université Paris 7, July 10, 2007.
Philosophical and Formal Foundations of Modern Physics,
Les Treilles, April 24, 2007.
Higher Categories and Their Applications,
Fields Institute, January 10, 2007.
at Louisiana State University, November 16, 2006 and
colloquium at Stanford University, December 7, 2006.
The Reese Prosser Memorial Lecture,
Mathematics Department, Dartmouth College, November 10, 2006.
About Long-Term Thinking,
Long Now Foundation,
San Francisco, October 13, 2006.
Colloquium at the Perimeter
Institute, May 31, 2006.
2006 Barrett Lectures - Current Developments in Geometric Topology,
University of Tennessee, Knoxville, April 29 - May 1, 2006.
University of Chicago, April 7-11, 2006.
des Sciences, Luminy, Marseille, Feburary 27, 2006.
Geometry of Computation
January 30-February 3, 2006,
Centre International de Recontres
Mathématiques (CIRM), Luminy, Marseille,
organized by Thomas
Ehrhard and Laurent Regnier.
the Union College
December 3-4, 2005, organized by Brenda Johnson, Kathryn Lesh,
Susan Niefield, Pedro Teixera and David Vella.
conference at the
Albert-Einstein-Institut, Potsdam, Germany,
October 10-14, 2005.
in Homotopy Theory,
graduate summer school at the
Pacific Institute for the Mathematical Sciences, University of
Calgary, August 22-26, 2005, organized by Kristine Bauer and Laura Scull.
Categories in Algebra,
Geometry and Mathematical Physics,
conference in honor of Ross Street's 60th birthday,
Macquarie University, Sydney, July 11-16, 2005.
U. C. Irvine Algebra Seminar, May 3, 2005.
Symposium on Discrete Algorithms,
(SODA), Vancouver, British Columbia, January 24, 2005.
Geometry and Topology,
conference on the occasion of Larry Breen's 60th birthday,
Institut Galilée, Université Paris 13, France,
December 15, 2004, organized by A. Abbes, S. Lichtenbaum, L. Schwartz
and J. Tilouine.
Workshop on Quantum Gravity in the Americas: Status and Future
Perimeter Institute, Waterloo, Canada, October 29, 2004,
organized by Etera Livine, Florian Girelli and Thomas Thiemann.
17th International Conference on General Relativity
(GR17), Dublin, Ireland, July 20, 2004.
Foundations and Applications,
Institute for Mathematics and
its Applications, Minneapolis, Minnesota, June 7 and June 16, 2004,
organized by Peter May and John Baez.
Non Perturbative Quantum Gravity: Loops and Spin Foams,
Centre Internationale de Recontres Mathématiques, Luminy, Marseille, France, organized by
Laurent Freidel, Phillipe Roche and Carlo Rovelli,
May 4, 2004.
Institute Program on Applied Homotopy Theory,
Department of Mathematics, University of Western Ontario,
organized by Dan Christensen and Rick Jardine,
September 20, 2003.
Gravitation: a Decennial Perspective,
Center for Gravitational Physics and Geometry, Pennsylvania State University,
June 9, 2003.
Dirac Centenary Conference,
Baylor University, Waco, Texas, October 1, 2002.
2002 Joint Spring Meeting of the Pacific Northwest Geometry Seminar
and Cascade Topology Seminar,
University of Washington, Seattle, Washington, May 12, 2002.
on Algebraic Stacks, Intersection Theory, and Non-Abelian Hodge Theory,
Mathematical Sciences Research Institute, Berkeley, California, April 5,
4 lectures at Graphs
and Patterns in Mathematics and Theoretical Physics,
conference in honor of Dennis Sullivan's 60th birthday, Department of
Mathematics and Institute of Mathematical Statistics, Stony Brook, New
York, June 14-21, 2001.
Conference on General Relativity and Relativistic Astrophysics,
University of Alberta, Edmonton, Canada, May 24, 2001.
CUNY Einstein Chair Mathematics Seminar,
Organized by Dennis Sullivan, City University of New York, March 28, 2001.
Symposium on Space-Time Structure,
organized by Kamesh Wali, May 29, 1999.
Program on Classical and Quantum Physics of Strong Gravitational
program at the Institute of Theoretical Physics,
University of California
at Santa Barbara, organized by Abhay Ashtekar, Gary Horowitz and
James Isenberg, April 27, 1999.