Nonderogatory Unicyclic Digraphs

Diego Bravo and Juan Rada

International Journal of Mathematics and Mathematical Sciences, 2007, vol. 2007, 1-8

Abstract:

A digraph is nonderogatory if its characteristic polynomial and minimal polynomial are equal. We find a characterization of nonderogatory unicyclic digraphs in terms of Hamiltonicity conditions. An immediate consequence of this characterization ia that the complete product of difans and diwheels is nonderogatory.

Date: 2007
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jijmms:046851

DOI: 10.1155/2007/46851

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