Median and Center of Zero-Divisor Graph of Commutative Semigroups
نویسنده
چکیده مقاله:
For a commutative semigroup S with 0, the zero-divisor graph of S denoted by &Gamma(S) is the graph whose vertices are nonzero zero-divisor of S, and two vertices x, y are adjacent in case xy = 0 in S. In this paper we study median and center of this graph. Also we show that if Ass(S) has more than two elements, then the girth of &Gamma(S) is three.
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عنوان ژورنال
دوره 3 شماره None
صفحات 69- 76
تاریخ انتشار 2008-11
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