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math.CA2024
Composition operators in -spaces, part I: acting conditions and boundedness
Daria Bugajewska, Piotr Kasprzak
The aim of this paper is to give the answer to the problem of characterization of acting conditions (necessary as well as sufficient) for composition operators in some sequence spa…
math.CA2024★ 1 cited
Josephy's theorem, revisited
Daria Bugajewska, Piotr Kasprzak
The main goal of this note is to characterize the necessary and sufficient conditions for a composition operator to act between spaces of mappings of bounded Wiener variation in a…