Volume 50 (1989) no. 3

Table of contents

On stability for time-periodic perturbations of harmonic oscillators
p. 229-238
Développements asymptotiques et effet tunnel dans l'approximation de Born-Oppenheimer
p. 239-257
Euclidean quantum mechanics : analytical approach
p. 259-308
Floquet operators with singular spectrum. I
p. 309-323
Floquet operators with singular spectrum. II
p. 325-334
The periodic orbit structure of orientation preserving diffeomorphisms on D2 with topological entropy zero
p. 335-356
Random fields on the adele ring and Wilson's renormalization group
p. 357-367
Matrix second-order differential equations and hamiltonian systems of quartic type
p. 369-375