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dc.contributor.authorAsdre, K.en
dc.contributor.authorIoannidou, K.en
dc.contributor.authorNikolopoulos, S. D.en
dc.date.accessioned2015-11-24T17:01:28Z-
dc.date.available2015-11-24T17:01:28Z-
dc.identifier.issn0166-218X-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/10929-
dc.rightsDefault Licence-
dc.subjectharmonious coloringen
dc.subjectharmonious chromatic numberen
dc.subjectachromatic numberen
dc.subjectinterval graphsen
dc.subjectpermutation graphsen
dc.subjectnp-completenessen
dc.subjectachromatic numberen
dc.subjectalgorithmen
dc.subjectcographsen
dc.titleThe harmonious coloring problem is NP-complete for interval and permutation graphsen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDOI 10.1016/j.dam.2007.07.005-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Ηλεκτρονικών Υπολογιστών και Πληροφορικήςel
heal.publicationDate2007-
heal.abstractIn this paper, we prove that the harmonious coloring problem is NP-complete for connected interval and permutation graphs. Given a simple graph G, a harmonious coloring of G is a proper vertex coloring such that each pair of colors appears together on at most one edge. The harmonious chromatic number is the least integer k for which G admits a harmonious coloring with k colors. Extending previous work on the NP-completeness of the harmonious coloring problem when restricted to the class of disconnected graphs which are simultaneously cographs and interval graphs, we prove that the problem is also NP-complete for connected interval and permutation graphs. (C) 2007 Elsevier B.V. All fights reserved.en
heal.journalNameDiscrete Applied Mathematicsen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

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