3 papers
math.GN2017
On uniformly continuous maps between function spaces
Rafal Gorak, Mikolaj Krupski, Witold Marciszewski
In this paper we develop a technique of constructing uni- formly continuous maps between function spaces Cp(X) endowed with the pointwise topology. We prove that if a space X is co…
math.FA2015
Extension operators on balls and on spaces of finite sets
Antonio Avilés, Witold Marciszewski
We study extension operators between spaces of subsets of of cardinality at most . As an application, we show that if is the unit ball of a nonseparable Hil…
math.FA2011
On measures on Rosenthal compacta
Witold Marciszewski, Grzegorz Plebanek
We show that if K is Rosenthal compact which can be represented by functions with countably many discontinuities then every Radon measure on K is countably determined. We also pres…