TY - JOUR
JF - IJMSI
JO - IJMSI
VL - 3
IS - 2
PY - 2008
Y1 - 2008/11/01
TI - Median and Center of Zero-Divisor Graph of Commutative Semigroups
TT -
N2 - 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.
SP - 69
EP - 76
AD -
KW - Commutative semigroup
KW - Zero-divisor graph
KW - Center of a graph
KW - Median of a graph.
UR - http://ijmsi.ir/article-1-52-en.html
DO - 10.7508/ijmsi.2008.02.007
ER -