Volume 118, Issue 1 – July 1983

## The geometry of Chern numbers

Pages 1-7 by Sandro Buoncristiano, Derek Hacon

## Ergodic actions of semisimple groups and product relations

Pages 9-19 by Robert J. Zimmer

## Hardy spaces on the complex ball are isomorphic to Hardy spaces on the disc, $1\le p < \infty$

Pages 21-34 by Przemysław Wojtaszczyk

## Positive polynomials for ample vector bundles

Pages 35-60 by William Fulton, Robert Lazarsfeld

## Minimal cones and the spherical Bernstein problem. I.

Pages 61-73 by Wu-Yi Hsiang

## Global smoothings of varieties with normal crossings

Pages 75-114 by Robert Friedman

## Group presentation, $p$-adic analytic groups and lattices in $\mathrm{SL}_2(\mathbf{C})$

Pages 115-130 by Alexander Lubotzky

## Eta invariants, signature defects of cusps, and values of $L$-functions

Pages 131-177 by Michael Francis Atiyah, Harold Donnelly, Isadore M. Singer

## Existence of least-area mappings of $N$-dimensional domains

Pages 179-185 by Brian White

## Self-spreading and strength of singularities for solutions to semilinear wave equations

Pages 187-214 by Michael Beals