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STOCHEL J On normal extensions of unbounded
NEIDHARDT H A nuclear dissipative scattering theory
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abelian group action analytic function assume automorphism Banach Banach space bilateral weighted shifts bounded C*-algebra CAP(R chain homotopy closure commuting compact abelian group compact operator completes the proof condition contains contraction converges Corollary defined denote dense dissipative operator eigenvalues element equivalent exists factor of type finite Foias follows formula groupoid Hence Hermitian Hilbert space homotopy hypothesis implies infinite invariant isometries isomorphic Lemma linear locally compact abelian LP(G Math module Moreover multiplicity Neumann algebra norm normal operators obtain operator algebras Operator Theory orthogonal Pearcy polynomials projection proof of Theorem Proposition prove quasinilpotent operators quasisimilar representation result satisfies self-adjoint semigroup sequence spectral measure spectrum subalgebra subnormal operators subset subspace lattice Suppose tensor product Theorem 2.1 topology unilateral shift unitary vectors wave operator zero