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WEAKLY PERFECT GRAPHS ARISING FROM RINGS

Published online by Cambridge University Press:  22 March 2010

H. R. MAIMANI ,
M. R. POURNAKI  and
S. YASSEMI
H. R. MAIMANI
Affiliation:
Mathematics Section, Department of Basic Sciences, Shahid Rajaee Teacher Training University, PO Box 16785-163, Tehran, Iran, and School of Mathematics, Institute for Research in Fundamental Sciences (IPM), PO Box 19395-5746, Tehran, Iran. e-mail: [email protected]
M. R. POURNAKI
Affiliation:
Department of Mathematical Sciences, Sharif University of Technology, PO Box 11155-9415, Tehran, Iran, and School of Mathematics, Institute for Research in Fundamental Sciences (IPM), PO Box 19395-5746, Tehran, Iran. e-mail: [email protected], http://math.ipm.ac.ir/pournaki/
S. YASSEMI
Affiliation:
School of Mathematics, Statistics and Computer Science, College of Science, University of Tehran, Tehran, Iran, and School of Mathematics, Institute for Research in Fundamental Sciences (IPM), PO Box 19395-5746, Tehran, Iran. email: [email protected], http://math.ipm.ac.ir/yassemi/
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Abstract

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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.

Keywords

Primary 05C1505C6905C17Secondary 13M05
Type
Research Article
Information
Glasgow Mathematical Journal , Volume 52 , Issue 3 , September 2010 , pp. 417 - 425
Copyright
Copyright © Glasgow Mathematical Journal Trust 2010

References

REFERENCES

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