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An Asplund space with norming Markuševič basis that is not weakly compactly generated [PDF]

open access: yesAdvances in Mathematics, 2021
We construct an Asplund Banach space $\mathcal{X}$ with a norming Marku evi basis such that $\mathcal{X}$ is not weakly compactly generated. This solves a long-standing open problem from the early nineties, originally due to Gilles Godefroy. En route to the proof, we construct a peculiar example of scattered compact space, that also solves a ...
Hájek, Petr   +3 more
openaire   +7 more sources

Smoothness in weakly compactly generated Banach spaces

open access: yesJournal of Functional Analysis, 1983
AbstractIf X∗ is a weakly compactly generated (WCG) Banach space, then X admits an equivalent C1-smooth norm. If a WCG Banach space X admits a Ck-smooth function with bounded support, then X admits Ck-smooth partitions of unity.
Godefroy, G   +3 more
openaire   +4 more sources

Projections in Weakly Compactly Generated Banach Spaces and Chang's Conjecture [PDF]

open access: yesJournal of Applied Analysis, 2005
A \(WCG\) Banach space \(X\) is said to have \textit{few operators} if there is a projectional resolution of the identity \((P_\alpha)_{\omega \leq \alpha \leq \lambda}\) such that any operator \(T \colon X \to X\) is of the form \(P + S\), where \(P\) is in the strong closure of the linear span of countably many \(P_\alpha\)'s and \(S\) has a ...
openaire   +4 more sources

The McShane integral in weakly compactly generated spaces

open access: yesJournal of Functional Analysis, 2010
Revised version.
Avilés, A.   +2 more
openaire   +4 more sources

Inner characterizations of weakly compactly generated Banach spaces and their relatives

open access: yesJournal of Mathematical Analysis and Applications, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fabian, M.   +3 more
openaire   +4 more sources

Smoothness and its equivalents in weakly compactly generated Banach spaces

open access: yesJournal of Functional Analysis, 1974
AbstractSome equivalent properties of the existence of Fréchet smooth norms in weakly compactly generated (WCG) Banach spaces are shown. Heredity of WCG property in such spaces is proved. The property of having a shrinking Markuševič basis is hereditary in all Banach spaces. Projections in WCG spaces and their duals are studied.
John, K, Zizler, V
openaire   +4 more sources

ON $M$-STRUCTURE AND WEAKLY COMPACTLY GENERATED BANACH SPACES [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 2003
AbstractIt is well known that every non-reflexive $M$-ideal is weakly compactly generated (in short, WCG). We present a family of Banach spaces $\{V_{s}:0 \lt s \lt 1\}$ which are not WCG and such that every $V_{s}$ satisfies the inequality$$ \|\f\|\geq\|\pi\f\|+s\|\f-\pi\f\|\quad\forall\f\in V_{s}^{\ast\ast\ast}, $$where $\pi$ is the canonical ...
openaire   +2 more sources

On Equivalent Characterizations of Weakly Compactly Generated Banach Spaces

open access: yesRocky Mountain Journal of Mathematics, 1994
Let us consider the following nice Theorem. For a Banach space \(V\) the following assertions are equivalent: (a) \(V\) is weakly compactly generated (w.c.g.), (b) \(V\) is GSG and simultaneously a Vašák (i.e., weakly \(K\)-countable determined) space, and (c) \(V\) is GSG and moreover \((V^*,w^*)\) continuously injects into \(\Sigma(\Gamma)\) for some
Fabian, M., Whitfield, J.H.M.
openaire   +3 more sources

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