@ARTICLE{,
author = {},
title = {Median and Center of Zero-Divisor Graph of Commutative Semigroups},
volume = {3},
number = {2},
abstract ={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. },
URL = {http://ijmsi.ir/article-1-52-en.html},
eprint = {http://ijmsi.ir/article-1-52-en.pdf},
journal = {Iranian Journal of Mathematical Sciences and Informatics},
doi = {10.7508/ijmsi.2008.02.007},
year = {2008}
}