An algebraic approach to the German sentence

Publication Type:

Journal Article

Source:

Linguistic Analysis, Volume 31, p.270-290 (2004)

Last edited by on Wed, 09/05/2007 - 11:15

An algebraic approach to the German noun phrase

Publication Type:

Journal Article

Source:

Linguistic Analysis, Volume 31, p.291-300 (2004)

Last edited by on Wed, 09/05/2007 - 11:13

An algebraic approach to Arabic sentence structure

Publication Type:

Journal Article

Source:

Linguistic Analysis, Volume 31, p.301-315 (2004)

Last edited by on Wed, 09/05/2007 - 11:11

A computational algebraic approach to English grammar

Publication Type:

Journal Article

Authors:

Lambek, J.

Source:

Syntax, Volume 7, Issue 2, p.128-147 (2004)

Last edited by on Wed, 09/05/2007 - 11:08

What is the world of mathematics?

Publication Type:

Journal Article

Authors:

Lambek, J.

Source:

Annals of Pure and Applied Logic, Volume 126, p.149-158 (2004)

Last edited by on Wed, 09/05/2007 - 11:06

Subgroups of fully residually free groups: algorithmic problems

Publication Type:

Journal Article

Source:

Contemporary Mathematical Series of the AMS. Group theory, Statistics and Cryptography, Volume 360, p.63-101 (2004)

Last edited by on Wed, 09/05/2007 - 10:54

Supersymmetry and algebraic Darboux transformations

Publication Type:

Journal Article

Source:

Journal of Physics A, Mathematical and General, Volume 37, p.10065-10078 (2004)

Last edited by on Wed, 09/05/2007 - 10:51

The Darboux transformation and algebraic deformations of shape-invariant potentials

Publication Type:

Journal Article

Source:

Journal of Physics A, Mathematical and General, Volume 37, p.1789-1804 (2004)

Last edited by on Wed, 09/05/2007 - 10:47

Geometry and Dynamics of Surface Group Representations.

09/14/2007 - 16:00
09/14/2007 - 17:00
Speaker: 
William Goldman (University of Maryland)
Location: 
CRM, UdeM, Pav. André-Aisenstadt, 2920, ch. de la Tour, salle 6214
Abstract: 

The space of representations of the fundamental group of a surface in a Lie group is a rich geometric object. Examples include symplectic vector spaces, Jacobi varieties and Teichmueller spaces. The topological symmetries of the surface acts on this space preserving a natural Poisson geometry. This action of the mapping class group closely relates to Hamiltonian flows on these moduli spaces. When the Lie group is compact, the action is chaotic. For uniformization representations corresponding to geometric structures, the action is properly discontinuous. In general the dynamics falls between these two extremes.

Last edited by on Tue, 09/04/2007 - 14:33

Isbell duality II

09/25/2007 - 16:00
09/25/2007 - 17:00
Speaker: 
Michael Barr
Location: 
Room 920, Burnside Hall, McGill University
Abstract: 

An Isbell duality arises when the "same" object lives in two different categories.  Examples abound, often when the object is 2. We attempt to flesh out this concept of an object in two categories. We give one new example that leads to a duality between totally disconnected Tychonoff (completely regular hausdorff) spaces and a class of subrings of powers of Z.  In this case, Z is the object in question.  We show how this applies to the known dualities between all Tychonoff spaces and a class of subrings of powers of R as well as to the classical Isbell duality between sober spaces and powers of the  Sierpinski space.

Joint work with John Kennison and Robert Raphael.

Last edited by on Wed, 09/05/2007 - 23:09