Relatively Weakly Open Convex Combinations of Slices and Scattered C-Algebras

JB Guerrero, FJ Fernández-Polo - Mediterranean Journal of Mathematics, 2020 - Springer
… of the closed unit ball is a relatively weakly open subset of the … convex combination of slices
C of the unit ball of a Banach space X and \(x\in C\), there exists a relatively weakly open set …

[HTML][HTML] Extreme differences between weakly open subsets and convex combinations of slices in Banach spaces

JB Guerrero, G López-Pérez, AR Zoca - Advances in Mathematics, 2015 - Elsevier
… nonempty relatively weakly open subset, respectively every convex combinations of slices,
… Also we define the weak-star versions of the above properties, the w ⁎ -slice-S2P, w ⁎ -D2P …

[HTML][HTML] Big slices versus big relatively weakly open subsets in Banach spaces

JB Guerrero, G López-Pérez, AR Zoca - Journal of Mathematical Analysis …, 2015 - Elsevier
… Furthermore, x 0 is a convex combination of elements of A ⊂ K and so x 0 ∈ K . Finally, for
1 ≤ j ≤ n , one has e ø ⌢ j ⁎ ( x 0 ) = ∑ i = 1 i ≠ j n 1 n e ø ⌢ j ⁎ ( x ø ⌢ i ) + 1 n e ø ⌢ j ⁎ ( x ø …

Relatively weakly open convex combinations of slices

T Abrahamsen, V Lima - Proceedings of the American Mathematical …, 2018 - ams.org
… We show that c0 and, in fact, C(K) for any scattered compact Hausdorff space K have the
property that finite convex combinations of slices of the unit ball are relatively weakly open …

On convex combinations of slices of the unit ball in Banach spaces

R Haller, P Kuuseok, M Põldvere - arXiv preprint arXiv:1703.02919, 2017 - arxiv.org
… all different from each other: every finite convex combination of slices of the unit ball is (1)
relatively weakly open, (2) has nonempty interior in relative weak topology of the unit ball, and (…

Slice convergence of parametrised sums of convex functions in non-reflexive spaces

R Wenczel, A Eberhard - Bulletin of the Australian Mathematical …, 1999 - cambridge.org
… | V strongly open in X… slice convergence of {f*Og* } evvThe dual upper slice topology is,
similarly, related to the upper Kuratowski convergence of epigraphs relative to the bounded-weak

[PDF][PDF] Relatively weakly open convex combinations of slices

V Lima, TA Abrahamsen - 2018 - uia.brage.unit.no
… We show that c0, and in fact C(K) for any scattered compact Hausdorff space K, have the
property that finite convex combinations of slices of the unit ball are relatively weakly open …

[HTML][HTML] Octahedral norms and convex combination of slices in Banach spaces

JB Guerrero, G López-Pérez, AR Zoca - Journal of Functional Analysis, 2014 - Elsevier
… property and the size of convex combinations of slices in Banach spaces. We … , and only if,
every convex combination of w ⁎ -slices in the dual unit ball has … Relatively weakly open sets …

Banach spaces where convex combinations of relatively weakly open subsets of the unit ball are relatively weakly open

TA Abrahamsen, JB Guerrero, R Haller, V Lima… - arXiv preprint arXiv …, 2018 - arxiv.org
… that finite convex combinations of slices of BC(K,K) are relatively weakly open in BC(K,K). …
that finite convex combinations of slices of BC0(K,X) are relatively weakly open in BC0(K,X). …

Strong diameter two property and convex combinations of slices reaching the unit sphere

G López-Pérez, M Martin, A Rueda Zoca - Mediterranean Journal of …, 2019 - Springer
convex combinations of slices of the unit ball are relatively open or have non-empty relative
… , we consider the analogous concept of convex combination of weak-star slices of \(B_X\). …