Approximations in (bi-)hyperideals of Semihypergroups
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زبان مدرک
Englishچکیده
We consider the fundamental relation on a semihypergroup to interpret the lower and upper approximations as subsets of the fundamental semigroup and we give some results in this connection. Also, we introduce the notion of a bi-hyperideal to study the relationship between approximations and bi-hyperideals.
کلید واژگان
Hyperoperationsemihypergroup
(Bi-)hyperideal
fundamental relation
Rough set
Approximation Space
شماره نشریه
4تاریخ نشر
2013-12-011392-09-10
ناشر
Springerسازمان پدید آورنده
School of Mathematics, Statistics and Computer Science, College of Sciences, University of Tehran, P.O. Box 14155-6455, Teheran, IranDepartment of Mathematics, University of Mazandaran, Babolsar, Iran
Department of Mathematics, Babol University of Technology, Babol, Iran
