Nolan Wallach's mathematical research is remarkable in both its breadth
and depth. His contributions to many fields include representation
theory, harmonic analysis, algebraic geometry, combinatorics, number
theory, differential equations, Riemannian geometry, ring theory, and
quantum information theory. The touchstone and unifying thread running
through all his work is the idea of symmetry. This volume is a
collection of invited articles that pay tribute to Wallach's ideas, and
show symmetry at work in a large variety of areas. The articles,
predominantly expository, are written by distinguished mathematicians
and contain sufficient preliminary material to reach the widest possible
audiences. Graduate students, mathematicians, and physicists interested
in representation theory and its applications will find many gems in
this volume that have not appeared in print elsewhere. Contributors: D.
Barbasch, K. Baur, O. Bucicovschi, B. Casselman, D. Ciubotaru, M.
Colarusso, P. Delorme, T. Enright, W.T. Gan, A Garsia, G. Gour, B.
Gross, J. Haglund, G. Han, P. Harris, J. Hong, R. Howe, M. Hunziker, B.
Kostant, H. Kraft, D. Meyer, R. Miatello, L. Ni, G. Schwarz, L. Small,
D. Vogan, N. Wallach, J. Wolf, G. Xin, O. Yacobi.