Communications of the
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ISSN(Print) 1225-1763 ISSN(Online) 2234-3024
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Commun. Korean Math. Soc. 1997; 12(1): 27-36

Printed March 1, 1997

Copyright © The Korean Mathematical Society.

Tripotence for irreducible sign-pattern matrices

Gwang-Yeon Lee, Yue-Ho Lee, Seok-Zun Song

Hanseo University, Sung Kyun Kwan University, Cheju National University

Abstract

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A matrix whose entries consist of the symbols $+,-,0$ is called a sign-pattern matrix. We characterize the $n\times n$ irreducible sign-pattern matrices that are sign tripotent.

Keywords: irreducible, cycle, sign tripotence, tripath

MSC numbers: 05C50, 15A03

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