3 papers
math.GN2026
The two-disjoint-copies property for compact spaces, homogeneity and connection with -theory
Jerzy KÄ kol, OndÅej Kurka, WiesÅaw Åliwa
A Tychonoff space has the two-disjoint-copies property (2DCP) if there exists a sequence of non-empty compact subsets of such that each contains two…
math.FA2026
Borel complexity of isometry classes of spaces with countable compacta
Marek Cúth, Martin Doležal, OndÅej Kurka +1
For every countable compact space , we determine the exact Borel complexity of the isometry class of the Banach space . As a byproduct, we also determine the pre…
math.LO2025
The rational Gurarii space and its linear isometry group
OndÅej Kurka, Maciej Malicki
We show that the classes of partial isometries in finite-dimensional polyhedral spaces and in finite-dimensional rational polyhedral spaces do not have the weak amalgamation proper…