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Fonction spectrale d’opérateurs non elliptiques. (French) Zbl 0373.47025
Sémin. Goulaouic-Schwartz 1976-1977, Équat. dériv. part. Anal. fonct., Exposé No.VII, 14 p. (1977).
MSC:
47F05 General theory of partial differential operators
35P05 General topics in linear spectral theory for PDEs
47B25 Linear symmetric and selfadjoint operators (unbounded)
35J99 Elliptic equations and elliptic systems
47A10 Spectrum, resolvent
Full Text: Numdam EuDML