Injective semigroup-algebras
Semigroups S for which the Banach algebra is injective are investigated and an application to the work of O. Yu. Aristov is described.
Chern Classes and Extraspecial Groups.
Expansion in finite simple groups of Lie type
We show that random Cayley graphs of finite simple (or semisimple) groups of Lie type of fixed rank are expanders. The proofs are based on the Bourgain-Gamburd method and on the main result of our companion paper [BGGT].
Revised Report on the Algorithmic Language ALGOL 60.
Report on the algorithmic language ALGOL 60.
Page 1