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List of Coauthors:

Richard C. Brewster (x 2)
Bruce A. Reed
Douglas B. West
Hehui Wu (x 2)
Xuding Zhu

"A mathematical theory is not to be considered complete until you have made it so clear that you can explain it to the first man whom you meet on the street."

--David Hilbert

"I remember one occasion when I tried to add a little seasoning to a review, but I wasn't allowed to. The paper was by Dorothy Maharam, and it was a perfectly sound contribution to abstract measure theory. The domains of the underlying measures were not sets but elements of more general Boolean algebras, and their range consisted not of positive numbers but of certain abstract equivalence classes. My proposed first sentence was: "The author discusses valueless measures in pointless spaces."

--Paul R. Halmos

"A large part of mathematics which becomes useful developed with absolutely no desire to be useful, and in a situation where nobody could possibly know in what area it would become useful; and there were no general indications that it ever would be so."

-- John von Neumann

"Chebyshev said it, and I say it again. There is always a prime between n and 2n."

--Paul Erdős

"The first sign of senility is that a man forgets his theorems, the second sign is that he forgets to zip up, the third sign is that he forgets to zip down."

--Stanislaw Ulam

Montreal Weather

"A mathematics lecture without a proof is like a movie without a love scene... This is already my third proof, make of that what you will."

-- Hendrik Lenstra

Upcoming Conferences in Discrete Math and Combinatorics

CanaDAM 2013
Memorial University, Saint John's, Newfoundland.
June 10 - 13, 2013
Choosability of Graphs with Bounded Order: Ohba's Conjecture and Beyond
Graph Theory Minisymposia.
Abstract.
Webpage.

Also see:
Peter Cameron's Conference Page.
Doug West's Conference Page.

Past Conferences

Thailand-Japan Joint Conference on Computational Geometry and Graphs
Srinakharinwirot University, Bangkok, Thailand
Dec 6 - 8, 2012
Webpage - Conference Program - Slides.

Second Montreal Spring School in Graph Theory and SMS
McGill University, Montreal
June 11 - July 6, 2012
SSGT Webpage SMS Webpage - Photo.

Conference Honoring the 50th Birthday of Robin Thomas
Georgia Tech, Atlanta
May 7-11, 2012
Webpage.

French-Brazilian Workshop on Graphs and Combinatorial Optimization
Redonda Beach, Ceará, Brazil
Apr 16-20, 2012
Webpage.

Past Seminar Talks

Seminar at SFU
Simon Fraser University
Burnaby, BC
January 8, 2013
Slides.

Seminar in Jinhua
Zhejiang Normal University
Jinhua, China
December 14, 2012
Slides.

Seminar in Guangzhou
South China Normal University
Guangzhou, China
December 11, 2012
Slides.

Seminar in Kyoto
Kyoto University
Kyoto, Japan
November 29, 2012
"A Proof of Ohba's List Colouring Conjecture" - Slides.

Seminar in Yokohama
Keio University
Yokohama, Japan
November 27, 2012
Slides.

DMO Talk
McGill University
Monréal QC
November 15, 2012
"A proof of a conjecture of Ohba" - Slides.

Seminar at IMPA
Instituto Nacional de Matemática Pura e Aplicada
Rio de Janeiro, Brazil
April 24, 2012
"A proof of Ohba's conjecture" - Abstract.