19 citations · 125 across the 36 of their papers we have counts for
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math.GN2026
On disjoint tilings of by star-shaped bodies
Piotr Koszmider, Piotr Szewczak
We employ the set-theoretic methods yielding the consistency of the existence of nontrivial pairwise disjoint covers of the unit interval (or equivalently for $n\in\…
math.LO2026
Small masas of the Calkin algebra in the Cohen model
Piotr Koszmider
We show that maximal abelian C*-subalgebras (masas) of the Calkin algebra (the algebra of all bounded operators on the separable Hilbert space modulo compact operators) may consist…
math.FA2026
Counting spaces of functions on separable compact lines
Maciej Korpalski, Piotr Koszmider, Witold Marciszewski
We investigate the following general problem, closely related to the problem of isomorphic classification of Banach spaces of continuous real-valued functions on a compact s…