On the local spectral radius in partially ordered Banach spaces
Mirosława Zima (1999)
Czechoslovak Mathematical Journal
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Mirosława Zima (1999)
Czechoslovak Mathematical Journal
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Jan Ligęza (2005)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
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We study the existence of positive solutions of the integral equation in both and spaces, where and . Throughout this paper is nonnegative but the nonlinearity may take negative values. The Krasnosielski fixed point theorem on cone is used.
Vladimír Müller (1997)
Annales Polonici Mathematici
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We prove the -spectral radius formula for n-tuples of commuting Banach algebra elements
Mirosława Zima (2014)
Czechoslovak Mathematical Journal
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We establish several inequalities for the spectral radius of a positive commutator of positive operators in a Banach space ordered by a normal and generating cone. The main purpose of this paper is to show that in order to prove the quasi-nilpotency of the commutator we do not have to impose any compactness condition on the operators under consideration. In this way we give a partial answer to the open problem posed in the paper by J. Bračič, R. Drnovšek, Y. B. Farforovskaya, E. L. Rabkin,...