Advances in Invariant Subspaces and Other Results of Operator Theory: 9th International Conference on Operator Theory, Timişoara, and Herculane (Romania), June 4–14, 1984Ronald G. Douglas, Grigore Arsene The annual Operator Theory conferences, organized by the Department of Mathematics of INC REST and the University of Timi?oara, are intended to promote cooperation and exchange of information between specialists in all areas of operator theory. This volume consists of papers contributed by the participants of the 1984 Conference. They reflect a great variety of topics, dealt with by the modern operator theory, including very recent advances in the invariant subspace problem, subalgebras of operator algebras, hyponormal, Hankel and other special classes of operators, spectral decompositions, aspects of dilation theory and so on. The research contracts of the Department of Mathematics of INCREST with the National Council for Science and Technology of Romania provided the means for developing the research activity in mathematics; they represent the generous framework of these meetings, too. It is our pleasure to acknowledge the financial support of UNESCO which also contibuted to the success of this meeting. We are indebted to Professor Israel Gohberg for including these Proceedings in the OT Series and for valuable advice in the editing process. Birkhauser Verlag was very cooperative in publishing this volume. Mariana Bota, Camelia Minculescu and Rodica Stoenescu dealt with the difficult task of typing the whole manuscript using a Rank Xerox 860 word processor; we thank them for the excellent job they did. |
Contents
Foreword | 7 |
ALTOMARE | 13 |
Korovkin closures in Banach algebras | 35 |
Copyright | |
13 other sections not shown
Other editions - View all
Advances in Invariant Subspaces and Other Results of Operator Theory: 9th ... Arsene Limited preview - 2013 |
Advances in Invariant Subspaces and Other Results of Operator Theory: 9th ... Arsene No preview available - 2012 |
Advances in Invariant Subspaces and Other Results of Operator Theory Arsene No preview available - 2014 |
Common terms and phrases
1986 Birkhäuser Verlag abelian adequate isometry analytic functions Ando dilation arbitrary Banach algebra Banach space Birkhäuser Verlag Basel bounded Hilbert module bounded operator Bucharest choice sequence cohomology commuting complete continuous contractive Hilbert module Corollary decomposition defined definition definitizable denote equation exists finite Foiaș formula function algebra functional calculus Hankel operator Hence Hilbert module Hilbert space holomorphic Hyplat hyponormal operator implies increases sufficiently rapidly INCREST invariant subspaces invertible isomorphism kernel Krein space lattice Lemma linear operators linear subspace Math matrix multiplication negative squares negative type norm obtain Operator Theory orthogonal polynomials positive problem projection PROOF Proposition prove s-lim scalar selfadjoint Sobolev space space H spectral spectrum subalgebra subset Theorem 3.1 Toeplitz Toeplitz operators topology transmission-line trivial unitary operator vector weakly similar zero ᎥᎾ