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Generalized coloring for tree-like graphs

Identifieur interne : 001270 ( Istex/Corpus ); précédent : 001269; suivant : 001271

Generalized coloring for tree-like graphs

Auteurs : Klaus Jansen ; Petra Scheffler

Source :

RBID : ISTEX:B786DB27747FE60A5EF8B582C4EBFCCFEEA2D041

Abstract

We discuss the Precoloring Extension (PrExt) and the List Coloring (LiCol) problems for trees, partial k-trees and cographs in the decision and the construction versions. Both problems for partial k-trees are solved in linear time when the number of colors is bounded by a constant and in polynomial time for an unbounded number of colors. For trees, we improve this to linear time. In contrast to that, the two problems differ in complexity for cographs. While PrExt has a linear-time decision algorithm, LiCol is shown to be NP-complete. We give polynomial-time algorithms for the corresponding enumeration problems # PrExt and # LiCol on partial k-trees and trees and for # PrExt on cographs.

Url:
DOI: 10.1016/S0166-218X(96)00085-6

Links to Exploration step

ISTEX:B786DB27747FE60A5EF8B582C4EBFCCFEEA2D041

Le document en format XML

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<ce:date-revised day="15" month="5" year="1992"></ce:date-revised>
<ce:abstract>
<ce:section-title>Abstract</ce:section-title>
<ce:abstract-sec>
<ce:simple-para>We discuss the
<ce:small-caps>Precoloring Extension</ce:small-caps>
(
<ce:small-caps>PrExt</ce:small-caps>
) and the
<ce:small-caps>List Coloring</ce:small-caps>
(
<ce:small-caps>LiCol</ce:small-caps>
) problems for trees, partial
<ce:italic>k</ce:italic>
-trees and cographs in the decision and the construction versions. Both problems for partial
<ce:italic>k</ce:italic>
-trees are solved in linear time when the number of colors is bounded by a constant and in polynomial time for an unbounded number of colors. For trees, we improve this to linear time. In contrast to that, the two problems differ in complexity for cographs. While
<ce:small-caps>PrExt</ce:small-caps>
has a linear-time decision algorithm,
<ce:small-caps>LiCol</ce:small-caps>
is shown to be NP-complete. We give polynomial-time algorithms for the corresponding enumeration problems #
<ce:small-caps>PrExt</ce:small-caps>
and #
<ce:small-caps>LiCol</ce:small-caps>
on partial
<ce:italic>k</ce:italic>
-trees and trees and for #
<ce:small-caps>PrExt</ce:small-caps>
on cographs.</ce:simple-para>
</ce:abstract-sec>
</ce:abstract>
</head>
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<title>Generalized coloring for tree-like graphs</title>
</titleInfo>
<titleInfo type="alternative" contentType="CDATA">
<title>Generalized coloring for tree-like graphs</title>
</titleInfo>
<name type="personal">
<namePart type="given">Klaus</namePart>
<namePart type="family">Jansen</namePart>
<affiliation>E-mail: jansen@dm3.uni-trier.de</affiliation>
<affiliation>FB IV — Mathematik und Informatik, Universität Trier, Postfach 38 25, D-54286 Trier, Germany</affiliation>
<description>Corresponding author.</description>
<description>Supported in part by Deutsche Forschungsgemeinschaft.</description>
<role>
<roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal">
<namePart type="given">Petra</namePart>
<namePart type="family">Scheffler</namePart>
<affiliation>Fachbereich Wirtschaft, Fachhochschule Stralsund, Groβe Parower Straβe 145, D-18435 Stralsund, Germany</affiliation>
<description>Supported by Koordinierungs- und Aufbau-Initiative für die Forschung in den Ländern Berlin, Brandenburg, Mecklenburg-Vorpommern, Sachsen, Sachsen-Anhalt und Thüringen e.V. under contract 014300/I.</description>
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<publisher>ELSEVIER</publisher>
<dateIssued encoding="w3cdtf">1997</dateIssued>
<dateModified encoding="w3cdtf">1992-05-15</dateModified>
<copyrightDate encoding="w3cdtf">1997</copyrightDate>
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<abstract lang="en">We discuss the Precoloring Extension (PrExt) and the List Coloring (LiCol) problems for trees, partial k-trees and cographs in the decision and the construction versions. Both problems for partial k-trees are solved in linear time when the number of colors is bounded by a constant and in polynomial time for an unbounded number of colors. For trees, we improve this to linear time. In contrast to that, the two problems differ in complexity for cographs. While PrExt has a linear-time decision algorithm, LiCol is shown to be NP-complete. We give polynomial-time algorithms for the corresponding enumeration problems # PrExt and # LiCol on partial k-trees and trees and for # PrExt on cographs.</abstract>
<note type="content">Section title: Contribution</note>
<relatedItem type="host">
<titleInfo>
<title>Discrete Applied Mathematics</title>
</titleInfo>
<titleInfo type="abbreviated">
<title>DAM</title>
</titleInfo>
<genre type="journal">journal</genre>
<originInfo>
<dateIssued encoding="w3cdtf">19970530</dateIssued>
</originInfo>
<identifier type="ISSN">0166-218X</identifier>
<identifier type="PII">S0166-218X(00)X0042-X</identifier>
<part>
<date>19970530</date>
<detail type="volume">
<number>75</number>
<caption>vol.</caption>
</detail>
<detail type="issue">
<number>2</number>
<caption>no.</caption>
</detail>
<extent unit="issue pages">
<start>105</start>
<end>200</end>
</extent>
<extent unit="pages">
<start>135</start>
<end>155</end>
</extent>
</part>
</relatedItem>
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<identifier type="DOI">10.1016/S0166-218X(96)00085-6</identifier>
<identifier type="PII">S0166-218X(96)00085-6</identifier>
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