A Generalization of A Contra Pre Semi-Open Maps | Zendy

Abdullah M. Abdul-Jabbar | Zendy

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A Generalization of A Contra Pre Semi-Open Maps

Author(s) -

Abdullah M. Abdul-Jabbar

Publication year - 2006

Publication title -

maǧallaẗ al-rāfidayn li-ʿulūm al-ḥāsibāt wa-al-riyāḍiyyāẗ/al-rafidain journal for computer sciences and mathematics

Language(s) - English

Resource type - Journals

eISSN - 2311-7990

pISSN - 1815-4816

DOI - 10.33899/csmj.2006.164052

Subject(s) - generalization , open and closed maps , open set , image (mathematics) , mathematics , closed set , topological space , subject (documents) , pure mathematics , algebra over a field , computer science , artificial intelligence , mathematical analysis , library science

The concept of θ-semi-open sets in topological spaces was introduced in 1984 and 1986 by T. Noiri (9, 10). In this paper we introduce and study a generalization of a contra pre semi-open maps due to (Caldas and Baker) (3), it is called contra pre θs-open maps, the maps whose images of a θ-semi-open sets is θ-semi-closed. Also, we introduce and study a new type of closed maps called contra pre θs-closed maps, which is stronger than contra pre semi-closed due to Caldas (2), the maps whose image of a θ- semi-closed sets is θ-semi-open.1991 Math. Subject Classification: 54 C10, 54 D 10.

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