Published by Duke University Press since its inception in 1935, the Duke Mathematical Journal is one of the world's leading mathematical journals. Without specializing in a small number of subject areas, it emphasizes the most active and influential areas of current mathematics.

### Volume 64, Number 3

#### Publication Date: December 1991

Composition of some singular Fourier integral operators and estimates for restricted X-ray transforms, II

Allan Greenleaf and Gunther Uhlmann; 415-444

Decay of eigenfunctions on semisimple symmetric spaces

Zeév Rudnick and Henrik Schlichtkrull; 445-450

An inverse image theorem for sheaves with applications to the Cauchy problem

Andrea D’Agnolo and Pierre Schapira; 451-472

Modified isoperimetric constants, and large time heat diffusion in Riemannian manifolds

Isaac Chavel and Edgar A. Feldman; 473-499

Fundamental $G$-strata for classical groups

Lawrence Morris; 501-553

Heights on the moduli space of Riemann surfaces with circle boundaries

Hala Halim Khuri; 555-570

Boundary Morera theorems for holomorphic functions of several complex variables

Josip Globevnik and Edgar Lee Stout; 571-615

Ample Weil divisors on $\mathrm{K}3$ surfaces with Du Val singularities

Valery Alexeev; 617-624