## Journal of Operator Theory, Volume 14National Institute for Scientific and Technical Creation, Department of Mathematics, 1985 - Operator theory |

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### Contents

rOJlOTJEIJ B fl ABTOMOpJH3MM IIHT PKTHHHHX foaKTOpriB | 3 |

STOCHEL J On normal extensions of unbounded | 31 |

NEIDHARDT H A nuclear dissipative scattering theory | 57 |

Copyright | |

8 other sections not shown

### Common terms and phrases

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