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Décomposition spectrale et opérateurs. (French) Zbl 0334.47015
Le Mathematicien. 16. Paris: Presses Universitaires de France. 147 p. (1976).

47Bxx Special classes of linear operators
47-02 Research exposition (monographs, survey articles) pertaining to operator theory
47Axx General theory of linear operators
46E30 Spaces of measurable functions (\(L^p\)-spaces, Orlicz spaces, Köthe function spaces, Lorentz spaces, rearrangement invariant spaces, ideal spaces, etc.)
46Cxx Inner product spaces and their generalizations, Hilbert spaces
47B25 Linear symmetric and selfadjoint operators (unbounded)
35J55 Systems of elliptic equations, boundary value problems (MSC2000)