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math.AC2013★ 3 cited
The intersection graph of ideals of is\\ weakly perfect
R. Nikandish, M. J. Nikmehr
A graph is called weakly perfect if its vertex chromatic number equals its clique number. Let be a ring and be the set of all left proper non-trivial ideals of . Th…
math.AC2013
The M-Principal Graph of a Commutative Ring
M. J. Nikmehr, F. Heydari
This paper has been withdrawn by the author because there are some typos in proofs.