On Rough Covexsity Sets

M. Swealam; R.A. Afify; M. El Sayed

doi:10.24297/jam.v4i3.3705

On Rough Covexsity Sets

Authors

M. Swealam Tanta university, Egypt
R.A. Afify Tanta university, Egypt
M. El Sayed Tanta university, Egypt

DOI:

https://doi.org/10.24297/jam.v4i3.3705

Keywords:

Convex set and Rough sets.

Abstract

In this paper, we introduced new concepts for surely and possibly , start shaped (convex ) set. Also for rough start shaped ( rough convex) set .We established the neccessary and sufficient conditions for a set to be star shaped (convex ) set or rough starshaped ( rough convex) set . Finally ,we introduced new concepts for star shaped (convex ) relation.

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Author Biographies

M. Swealam, Tanta university, Egypt

Department of Mathematics, Faculty of Science

R.A. Afify, Tanta university, Egypt

Department of Mathematics, Faculty of Science

M. El Sayed, Tanta university, Egypt

Department of Mathematics, Faculty of Science

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Published

2013-12-11

How to Cite

Swealam, M., Afify, R., & Sayed, M. E. (2013). On Rough Covexsity Sets. JOURNAL OF ADVANCES IN MATHEMATICS, 4(3), 534–540. https://doi.org/10.24297/jam.v4i3.3705