Centre de Recherche en Théorie des Catégories
 Montréal 
Category Theory Research Center
What is Category Theory?
 Category
Theory at McGill A personal account by Marta Bunge.
 Category
Theory  an expository article by JeanPierre Marquis from the Stanford Encyclopedia of Philosophy.
 Categorical
Logic, an entry by Joachim Lambek from the Encyclopaedia of
Mathematics (Springer).
 Category,
another article from the Encyclopaedia of Mathematics (Springer).
 Categories,
Quantization, and Much More  an introduction by John Baez. (You
might also explore his series "This Week's Finds in Mathematical
Physics" which often has references to
logic,
category theory, and particularly
ncategory
theory and more
ncategory theory. You can also look at these slides:
Why
and
What
are ncategories?)
 Toposes,
Triples and Theories A classic text by M Barr and C Wells, now
freely available online (TAC Reprints). (Also available at the
authors' own website.)

Category Theory for Computing Science
(Another classic text by M Barr and C Wells, published by the CRM.)
Now freely available here,
on
TAC, and
on the authors' webpage.

Acyclic Models (Ordering information for a recent book by M Barr.)
 Singular
Coverings of Toposes (Ordering information for a recent book by M
Bunge and J Funk.)
 An Intuitive
Introduction to Motivic Homotopy Theory  lecture by Vladimir
Voevodsky (American Academy of Arts and Sciences, October 2002).
[A quote: "Categories: one of the most important ideas of 20th century mathematics"]

Les Dérivateurs Texte d'Alexandre Grothendieck (in progress)
(This is not an introductory text, but rather is a "historic" document
from a legendary category theorist.)

Récoltes et Semailles (A translation into English, in progress,
of Grothendieck's "Reflections".)
 Visiting Grothendieck (by Roy Lisker)

The Grothendieck Circle
 Ebooks,
etc (free downloads)
Some past seminars, conferences, and meetings in Montreal
Octoberfest 2012, Montreal, 27  28 October, 2012
Makkaifest 2009
Models, Logics and HigherDimensional Categories  a meeting in tribute to
the work of Mihaly Makkai, CRM, Montreal, 1820 June 2009
Also: 1day
workshop held at McGill in conjunction with the Makkaifest, 18 June 2009
A proceedings
volume is available in the CRM Proceedings series.
"OctoberFest":
Category Theory Meeting, October 1617, 2004
André Joyal's
60^{th} birthday, 111213 April 2003
"OctoberFest":
Category Theory Meeting, October 1617, 1999
Barrfest
The CRTC/CTRC held a special 3day conference in May 1997, in
honour of Michael Barr's sixtieth birthday.
A special issue of the
Journal of Pure and Applied Algebra devoted to the
Proceedings
of this conference has been published:
JPAA
Vol 143.
[Available at Science
Direct]
In addition, several tributes of a more personal nature are available on
triples:
Lambekfest
Lambek Fest
The Department of Mathematics and Statistics of McGill University
held a day of scientific activities to celebrate the 80th
birthday of Professor Joachim Lambek on Thursday, December 5th, 2002.
Further information
is available on this site.
On December 5th, 1997, a oneday symposium was held in honour of
Joachim Lambek's 75th birthday: the program and some photos of that
occasion may be found
here.
In addition, the journals Theory and
Applications of Categories and
Mathematical Structures in Computer Science
have published special
volumes in honour of the work of our colleague Joachim Lambek, and in
celebration of his 75^{th} birthday. Their
tables of contents are here.
The MSCS volume has appeared as Vol 10 (2000), No. 2;
the TAC volume has appeared as
Volume 6 (1999).
A further volume of papers in linguistics, in celebration of his
80^{th} birthday, has been published by CSLI

details may be found here. You can also find
the table
of contents here.
Papers and home pages for members and some (past) visitors of the Centre:
Some Maths and Category Theory Sites
For comments or help, please contact
RAG Seely
(rags@math.mcgill.ca)