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Sur le spectre des opérateurs elliptiques à bicaracteristiques toutes périodiques. (French) Zbl 0459.58014


MSC:

58J50 Spectral problems; spectral geometry; scattering theory on manifolds
58J40 Pseudodifferential and Fourier integral operators on manifolds
58J20 Index theory and related fixed-point theorems on manifolds
35P20 Asymptotic distributions of eigenvalues in context of PDEs