Authors:
Miguel Caldas Departamento de Matematica Aplicada, Universidade Federal Fluminense Rua Mario Santos Braga, S/N 24020-140, Niteroi, RJ, Brasil Rua Mario Santos Braga, S/N 24020-140, Niteroi, RJ, Brasil

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Salid Jafari College of Vestsjaelland South Herrestraede 11, 4200 Slagelse, Denmark Herrestraede 11, 4200 Slagelse, Denmark

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Takashi Noiri Department of Mathematics, Yatsushiro College of Technology Kumamoto, 866-8501 Japan Kumamoto, 866-8501 Japan

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Summary  

We define the concept of Λb-sets (resp. Vb-sets) of a topological space, i.e., the intersection of b-open (resp. the union of b-closed) sets. We study the fundamental property of Λb-sets (resp. Vb-sets) and investigate the topologies defined by these families of sets.

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Acta Mathematica Hungarica
Language English
Size B5
Year of
Foundation
1950
Volumes
per Year
3
Issues
per Year
6
Founder Magyar Tudományos Akadémia  
Founder's
Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5294 (Print)
ISSN 1588-2632 (Online)

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