Applications of rough sets to ?-hyperideals in left almost ?-semihypergroups
The relations between rough sets and algebraic systems have been already considered by many mathematicians. This article concerns the relationship between rough sets and left almost ?-semihypergroups. In this article, using Pawlak idea, the properties of lower and upper approximations of sub LA-?-semihypergroup (respectively ?-hyperideal, bi-?-hyperideal and interior ?-hyperideal) are investigated.
rough sets ?-hyperideals la-?-semihypergroups rough ?-hyperideals