Contents Online

# Mathematical Research Letters

## Volume 4 (1997)

### Number 4

### Contents

On Melnikov’s persistency problem

pp. 445-458

Plurisubharmonic functions and subellipticity of the $\bar\partial$-Neumann problem on non-smooth domains

pp. 459-467

Hardy’s inequalities for Sobolev functions

pp. 489-500

The trace class conjecture and the Weyl upper bound on the discrete spectrum of arithmetic groups

pp. 501-511

A Lefschetz formula for flows

pp. 513-520

The Gromov invariants of Ruan-Tian and Taubes

pp. 521-532

Heat kernel and moduli spaces II

pp. 569-588

Order trees and laminations of the plane

pp. 603-616