**Volume 17, Issue 4, pp 448-464**

**Publication Date**: 2017-08-29

http://dx.doi.org/10.22436/jmcs.017.04.02

Baravan A. Asaad - Department of Mathematics, Faculty of Science, University of Zakho, Kurdistan-region, Iraq

Molodtsov [D. Molodtsov, Global optimization, control, and games, III, Comput. Math. Appl., \({\bf 37}\) (1999), 19--31] studied the concept of soft sets. The concept of soft sets is introduced as a general mathematical tool for dealing with uncertainty. In this paper, we give some basic relations about different classes of soft sets and soft closure operator. The purpose of this paper is to introduce soft extremally disconnected spaces via soft sets. Furthermore, some relations of soft sets and soft closure via soft extremally disconnected spaces have been investigated.

Soft sets, soft extremally disconnected spaces, soft \(\lambda\)-open sets where \(\lambda\in \{regular، \alpha، pre، semi، b، \beta\}\).

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