سال انتشار: ۱۳۹۰

محل انتشار: همایش منطقه ای پژوهشهای نوین در ریاضی

تعداد صفحات: ۸

نویسنده(ها):

S.B Hosseini – Department of Mathematics, Sari Branch, Islamic Azad University, Sari, Iran
N. Jafarzadeh – Department of Mathematics, Sari Branch, Islamic Azad University, Sari, Iran
A Gholami – Department of Mathematics, Sari Branch, Islamic Azad University, Sari, Iran

چکیده:

T-rough sets was introduced in [4]. Our aim in this paper is to introduce the concept of T-rough ideal , T-rough quotient ideal and T-rough fuzzy ideal and study on a set-valued homomorphism for semigroups. Rough sets were originally proposed in the presence of an equivalence relation. An equivalence relation is sometimes difficult to be obtained in rearward problems due to the vagueness and incompleteness of human knowledge. From this point of view, in this paper, we generalized some theorems that they are proved in [21].