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Journal of Operator Theory

Volume 26, Issue 1, Summer 1991

Minimal projections in the reduced group C*-algebra of Z_n*Z_m
Joel Anderson, Bruce Blackadar and Uffe Haagerup
J. Operator Theory pp. 3-23
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Geometry of unitary orbits
Esteban Andruchow and Demetrio Stojanoff
J. Operator Theory pp. 25-41
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Hyper-reflexivity of isometries and weak contractions
Michal Zajac
J. Operator Theory pp. 43-51
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Approximations of positive operators and continuity of the spectral radius
F. Aradinga and V. Caselles
J. Operator Theory pp. 53-71
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On the index of the infinitesimal generator of a flow
Matthias Lesch
J. Operator Theory pp. 73-92
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Partial O*-algebras generated by two closed symmetric operators
Atsushi Inoue
J. Operator Theory pp. 93-108
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Compact composition operators not in the Schatten classes
Tom Carroll and Carl C. Cowen
J. Operator Theory pp. 109-120
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Bounded module maps and pure completeley positive maps
Huaxin Lin
J. Operator Theory pp. 121-138
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A converse of the Kato-Rosenblum theorem
Hagen Neidhardt and Manfred Wollenberg
J. Operator Theory pp. 139-153
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Functions of generalized bounded type in spectral theory of non-weak contractions
G. M. Gubreev and A. M. Jerbashian
J. Operator Theory pp. 155-190
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The band method for several positive extension problems of non-band type
I. Gohberg, M. A. Kaashoek and H. J. Woerdeman
J. Operator Theory pp. 191-218
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