Volume 130, Issue 2, September 1989

## On the foliated products of class $C^1$

Pages 227-271 by Takashi Tsuboi

## Ergodic actions of compact groups on operator algebras: I. General theory

Pages 273-319 by Antony Wassermann

## On the Cauchy problem for Boltzmann equations: Global existence and weak stability

Pages 321-366 by Ronald J. DiPerna, Pierre-Louis Lions

## Exponential sums and Newton polyhedra: Cohomology and estimates

Pages 367-406 by Alan Adophson, Steven Sperber

## On the classification of constant mean curvature tori

Pages 407-451 by Ulrich Pinkall, Ivan Sterling