Volume 134, Issue 2, September 1991

Regularity properties of Fourier integral operators

Pages 231-251 by Andreas Seeger, Christopher D. Sogge, Elias M. Stein

A boundary Harnack principle in twisted Hölder domains

Pages 253-276 by Richard F. Bass, Krzysztof Burdzy

Floer homology and splittings of manifolds

Pages 277-323 by Tomoyoshi Yoshida

Singular spaces, characteristic classes, and intersection homology

Pages 325-374 by Sylvain E. Cappell, Julius L. Shaneson

Stratified symplectic spaces and reduction

Pages 375-422 by Reyer Sjamaar, Eugene Lerman

$\mathrm{C}^\ast$-algebras associated with groups with Kazhdan’s Property T

Pages 423-431 by Simon Wassermann

Szegö’s extremum problem on the unit circle

Pages 433-453 by Attila Máté, Paul Nevai, Vilmos Totik