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Glasgow Mathematical Journal (1)

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WEAKLY PERFECT GRAPHS ARISING FROM RINGS
H. R. MAIMANI, M. R. POURNAKI, S. YASSEMI
Journal:

Glasgow Mathematical Journal / Volume 52 / Issue 3 / September 2010

Published online by Cambridge University Press:

22 March 2010, pp. 417-425

Print publication:

September 2010
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A graph is called weakly perfect if its chromatic number equals its clique number. In this paper a new class of weakly perfect graphs arising from rings are presented and an explicit formula for the chromatic number of such graphs is given.