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Preface
Hejduk, Jacek 
; ; ; (2015)
; ; ; (2015)
On equivalence of topological and restrictional continuity
; Hejduk, Jacek (Wydawnictwo Uniwersytetu Łódzkiego, 2015)
(Wydawnictwo Uniwersytetu Łódzkiego, 2015)
On the abstract density topologies generated by lower and almost lower density operators
Hejduk, Jacek ; (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
; (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
Baire Category Lower Density Operators with Borel Values
; Hejduk, Jacek ; (Springer Nature, 2023)
; (Springer Nature, 2023)
We prove that the lower density operator associated with the Baire category density points in the real line has Borel values of class Π<SUP>0</SUP><SUB>3</SUB> which is analogous to the measure case. We also introduce ...