W. Marciszewski

activity

20112026

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Showing 2019Show all

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math.FA2019

Sailing over three problems of Koszmider

Félix Cabello Sánchez, Jesús M. F. Castillo, Witold Marciszewski +2

We discuss three problems of Koszmider on the structure of the spaces of continuous functions on the Stone compact $K_{A}$ generated by an almost disjoint family $\mathcal…

math.FA2019

Twisted sums of $c_{0}$ and $C (K)$ -spaces: A solution to the CCKY problem

Antonio Avilés, Witold Marciszewski, Grzegorz Plebanek

We consider the class of Banach space $Y$ for which $c_{0}$ admits a nontrivial twisted sum with $Y$ . We present a characterization of such space $Y$ in terms of properties of the $w…

Sailing over three problems of Koszmider

Twisted sums of c0​ and C(K)-spaces: A solution to the CCKY problem

Twisted sums of $c_{0}$ and $C (K)$ -spaces: A solution to the CCKY problem