On invariant functions for positive operators
Humphrey Fong (1970)
Colloquium Mathematicae
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Humphrey Fong (1970)
Colloquium Mathematicae
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Walter Rudin (1972)
Studia Mathematica
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C. Read (1999)
Studia Mathematica
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Properties of strictly singular operators have recently become of topical interest because the work of Gowers and Maurey in [GM1] and [GM2] gives (among many other brilliant and surprising results, such as those in [G1] and [G2]) Banach spaces on which every continuous operator is of form λ I + S, where S is strictly singular. So if strictly singular operators had invariant subspaces, such spaces would have the property that all operators on them had invariant subspaces. However, in...
T. Husain, James C. S. Wong (1973)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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E. Nordgren, M. Radjabalipour, H. Radjavi, P. Rosenthal (1988)
Studia Mathematica
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Peter Rosenthal (1982)
Banach Center Publications
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Junfeng Liu (2017)
Czechoslovak Mathematical Journal
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We discuss the invariant subspace problem of polynomially bounded operators on a Banach space and obtain an invariant subspace theorem for polynomially bounded operators. At the same time, we state two open problems, which are relative propositions of this invariant subspace theorem. By means of the two relative propositions (if they are true), together with the result of this paper and the result of C. Ambrozie and V. Müller (2004) one can obtain an important conclusion that every polynomially...
Leonardo Colzani (1987)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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