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A Generalization of A Contra Pre Semi-Open Maps | ||
| AL-Rafidain Journal of Computer Sciences and Mathematics | ||
| Article 6, Volume 3, Issue 2, 2006, Pages 59-68 PDF (247.12 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.33899/csmj.2006.164052 | ||
| Author | ||
| Abdullah M. Abdul-Jabbar | ||
| College of Science University of Salahaddin | ||
| Abstract | ||
| The concept of q-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 qs-open maps, the maps whose images of a q-semi-open sets is q-semi-closed. Also, we introduce and study a new type of closed maps called contra pre qs-closed maps, which is stronger than contra pre semi-closed due to Caldas [2], the maps whose image of a q-semi-closed sets is q-semi-open.1991 Math. Subject Classification: 54 C10, 54 D 10. | ||
| Keywords | ||
| q-semi-open sets; Contra pre qs-open and Contra pre qs-closed maps | ||
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