19 citations · 125 across the 36 of their papers we have counts for
5 papers · 1 filter
On the problem of compact totally disconnected reflection of nonmetrizability
Piotr Koszmider
We construct a ZFC example of a nonmetrizable compact space such that every totally disconnected closed subspace is metrizable. In fact, the construction can be…
An isometrically universal Banach space induced by a non-universal Boolean algebra
Christina Brech, Piotr Koszmider
Given a Boolean algebra , we construct another Boolean algebra with no uncountable well-ordered chains such that the Banach space of real valued continuous functions $C(K_A)…
Uncountable equilateral sets in Banach spaces of the form
Piotr Koszmider
The paper is concerned with the problem whether a nonseparable Banach space must contain an uncountable set of vectors such that the distances between every two distinct vectors of…
On complemented copies of in spaces
Leandro Candido, Piotr Koszmider
Given a compact Hausdorff space we consider the Banach space of real continuous functions or equivalently the -fold injective tensor product $\hat\bigotimes_{\varep…
On automorphisms of the Banach space
Piotr Koszmider, Cristóbal Rodriguez-Porras
We investigate Banach space automorphisms focusing on the possibility of representing their fragments of the form $$T_{B,A}:\ell_\inf…