A remark on Ʌ-systems in Banach spaces
J. R. Holub (1971)
Colloquium Mathematicae
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J. R. Holub (1971)
Colloquium Mathematicae
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K. Goebel, E. Złotkiewicz (1971)
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Jochen Reinermann (1970)
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Stanisław Szufla (1977)
Annales Polonici Mathematici
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V. Lakshmikantham, A. R. Mitchell, R. W. Mitchell (1978)
Annales Polonici Mathematici
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Stephen A. Saxon, Albert Wilansky (1977)
Colloquium Mathematicae
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Rasoul Nasr-Isfahani, Sima Soltani Renani (2011)
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Let 𝓐 be a Banach algebra and let ϕ be a nonzero character on 𝓐. We give some necessary and sufficient conditions for the left ϕ-contractibility of 𝓐 as well as several hereditary properties. We also study relations between homological properties of some Banach left 𝓐-modules, the left ϕ-contractibility and the right ϕ-amenability of 𝓐. Finally, we characterize the left character contractibility of various Banach algebras related to locally compact groups.
Stanisław Szufla (2009)
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
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L. Waelbroeck (1982)
Banach Center Publications
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Bertram Yood (2008)
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The set of commutators in a Banach *-algebra A, with continuous involution, is examined. Applications are made to the case where A = B(ℓ₂), the algebra of all bounded linear operators on ℓ₂.
D. Azagra, J. Gómez, J. A. Jaramillo (1996)
Extracta Mathematicae
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