Volume 44 (1986) no. 2

Table of contents

An explicit determination of the Petrov type N space-times on which the conformally invariant scalar wave equation satisfies Huygens' principle
p. 115-153
Existence of the time evolution for Schrödinger operators with time dependent singular potentials
p. 155-171
Compact manifold of coherent states invariant by semisimple Lie groups
p. 173-193
On the quasi-classical limit of the total scattering cross-section in nonrelativistic quantum mechanics
p. 195-210