activity
20112026
most citedA metrizable with not homeomorphic to

5 citations · 12 across the 13 of their papers we have counts for

collaborators

19 papers

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…

math.GN2025

Linear orders on chainable continua

Witold Marciszewski, Julia Ścisłowska, Benjamin Vejnar

We define and study certain linear orders on chainable continua. Those orders depend on a sequence of chains obtained from definition of chainability and on a fixed non-principal u…

math.GN2025

On Sierpiński sets, Hurewicz spaces and Hilgers functions

Witold Marciszewski, Roman Pol, Piotr Zakrzewski

The Hurewicz property is a classical generalization of -compactness and Sierpiński sets (whose existence follows from CH) are standard examples of non--compact Hurewicz space…

math.GN2024

Characterizing function spaces which have the property (B) of Banakh

Mikołaj Krupski, Kacper Kucharski, Witold Marciszewski

A topological space has the property (B) of Banakh if there is a countable family of closed nowhere dense subsets of absorbing all compact subsets…

math.GN2023

On sequences of finitely supported measures related to the Josefson--Nissenzweig theorem

Witold Marciszewski, Damian Sobota, Lyubomyr Zdomskyy

Given a Tychonoff space , we call a sequence of signed Borel measures on a finitely supported Josefson--Nissenzweig sequence (in short a JN-s…

math.FA2022

The Josefson--Nissenzweig theorem and filters on

Witold Marciszewski, Damian Sobota

For a free filter on , endow the space , where , with the topology in which every element of is isolated whereas all open neighborhoods of…