Conservando conjuntos Fuzzy sg-cerrados

doi:10.4067/S0716-09172001000200001

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Proyecciones (Antofagasta)

versión impresa ISSN 0716-0917

Proyecciones (Antofagasta) v.20 n.2 Antofagasta ago. 2001

doi: 10.4067/S0716-09172001000200001

PRESERVING FUZZY SG-CLOSED
SETS

Conservando conjuntos Fuzzy
sg-cerrados

MIGUEL CALDAS CUEVA
Universidade Federal Fluminense, RJ - Brasil
and
RATNESH KUMAR SARAF
Government Kamla Nehru - India

Abstract

In this paper we consider new weak and stronger forms of fuzzy irresolute and fuzzy semi-closure via the concept Fsg-closed sets which we call Fap-irresolute maps, Fap-semi-closed maps and contra-fuzzy irresolute and we use it to obtain several results in the literature concerning the preservation of fuzzy sg-closed sets and to abtain also a characterization of fuzzy semi-T_1/2 spaces.

1991 Math. Subject Classification : 54C10, 54D10.

Keywords and phrases : Fuzzy topological spaces, Fsg-closed sets, fuzzy semi-open sets, fuzzy semi-closed maps, fuzzy irresolute maps.

References

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Received : February 2001.

Miguel Caldas Cueva

Departamento de Matemática Aplicada

Universidade Federal Fluminense

Rua Mário Santos Braga s / n⁰

CEP: 24020-140, Niteroi-RJ

Brasil

E-MAIL : gmamccs@vm.uff.br

and

Ratnesh Kumar Saraf

Department of Mathematics

Government Kamla Nehru

Girls College

DAMOH (M.P)-470661

India

E-MAIL : saraf@vm.uff.br