This volume presents the papers based upon lectures given at the 1999
Seminaire de Mathemathiques Superieurs held in Montreal. It includes
contributions from many of the most active researchers in the field.
This subject has been in a remarkably active state of development since
the 1970s, resulting in new motivation for study in surprisingly
different directions. Beyond the intrinsic interest in the study of
integrable models of many-particle systems, spin chains, lattice and
field theory models at both the classical and the quantum level, and
completely solvable models in statistical mechanics, there have been new
applications in relation to a number of other fields of current
interest. These fields include theoretical physics and pure mathematics,
for example the Seiberg-Witten approach to supersymmetric Yang-Mills
theory, the spectral theory of random matrices, topological models of
quantum gravity, conformal field theory, mirror symmetry, quantum
cohomology, etc. This collection gives a cross-section of work in the
area of integrable systems which is presented by some of the leading
active researchers in this field.