Volume 138, Issue 3 – November 1993

## The structure of the irrational rotation $C^\ast$-algebra

Pages 477-501 by George A. Elliott, David E. Evans

## Regularity results for nonlinear wave equations

Pages 503-518 by Jalal Shatah, Michael Struwe

Pages 519-554 by Tim D. Cochran, Kent E. Orr

## A bivariant Chern–Connes character

Pages 555-590 by Victor Nistor

## Quasi-isoperimetric inequality for polynomial hulls

Pages 591-599 by Herbert Alexander

## Boundary-value problems on $\mathbb{S}^n$ for surfaces of constant Gauss curvature

Pages 601-624 by Bo Guan, Joel Spruck

## Périodes des variétés abéliennes à multiplication complexe

Pages 625-683 by Pierre Colmez