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Języki publikacji
Abstrakty
The paper includes a necessary condition and sufficient conditions under which two ψ -sparse topologies generated by two functions ψ1 and ψ 2 are equal. Additionally we proved that the intersection of all ψ -sparse topologies is equal to the Hashimoto topology.
Rocznik
Tom
Strony
21--36
Opis fizyczny
Bibliogr. 4 poz.
Twórcy
autor
- Centre of Mathematics and Physics Technical University of Łódź al. Politechniki 11, 90-924 Łódź, Poland
autor
- Institute of Mathematics Academia Pomeraniensis ul. Arciszewskiego 22a, 76-200 Słupsk, Poland
Bibliografia
- [1] C. Goffman, C. Neugebauer, T. Nishiura. Density topology and approximate continuity. Duke Math. J. ,28 , 497-505, 1961.
- [2] A. Goździewicz-Smejda, E. Łazarow. Topologies generated by the ψ -sparse sets. (to appear Real Analysis Exchange).
- [3] D.N. Sarkhiel, A.K. De. The proximally continuous integrals. J. Austral. Math. Soc. (Ser. A) , 31 , 26-45, 1981.
- [4] M. Terepeta, E. Wagner-Bojakowska. Ψ -density topologies. Circ. Mat. Palermo ,48 , 451-476, 1999.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-9b4f761f-bb66-4d33-baac-9fcd7895782a