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Supra-Approximation Spaces Using Mixed Degree Systems in Graph Theory

Journal: International Journal of Science and Research (IJSR) (Vol.6, No. 2)

Publication Date:

Authors : ; ;

Page : 1501-1514

Keywords : o-space; i-space; supra-approximation space; near supra-approximation space; m-lower approximation and m-upper approximation;

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This paper is concerned with introducing and studying the o-space by using out degree system (resp. i-space by using in degree system) which are the core concept in this paper. In addition, the m-lower approximations, the m-upper approximations and o-space and i-space. Furthermore, we introduce near supraopen (near supraclosed) d. g. 's. Finally, the supra-lower approximation, supra-upper approximation, supra-accuracy are defined and some of its properties are investigated.

Last modified: 2021-06-30 17:48:27