Strong Chromatic Index Of Planar Graphs With Large Girth

Let Δ ≥ 4 be an integer. In this note, we prove that every planar graph with maximum degree Δ and girth at least 1 Δ+46 is strong (2Δ−1)-edgecolorable, that is best possible (in terms of number of colors) as soon as G contains two adjacent vertices of degree Δ. This improves [6] when Δ ≥ 6....

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Main Authors: Jennhwa Chang Gerard, Montassier Mickael, Pêche Arnaud, Raspaud André
Format: Article
Language:English
Published: University of Zielona Góra 2014-11-01
Series:Discussiones Mathematicae Graph Theory
Subjects:
Online Access:https://doi.org/10.7151/dmgt.1763
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author Jennhwa Chang Gerard
Montassier Mickael
Pêche Arnaud
Raspaud André
author_facet Jennhwa Chang Gerard
Montassier Mickael
Pêche Arnaud
Raspaud André
author_sort Jennhwa Chang Gerard
collection DOAJ
description Let Δ ≥ 4 be an integer. In this note, we prove that every planar graph with maximum degree Δ and girth at least 1 Δ+46 is strong (2Δ−1)-edgecolorable, that is best possible (in terms of number of colors) as soon as G contains two adjacent vertices of degree Δ. This improves [6] when Δ ≥ 6.
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spelling doaj.art-3e41abf6277a4a8db9fd025be8caea2b2023-08-02T08:59:11ZengUniversity of Zielona GóraDiscussiones Mathematicae Graph Theory2083-58922014-11-0134472373310.7151/dmgt.1763dmgt.1763Strong Chromatic Index Of Planar Graphs With Large GirthJennhwa Chang Gerard0Montassier Mickael1Pêche Arnaud2Raspaud André3Department of Mathematics/Taida Institute for Mathematical Sciences National Taiwan University, Taipei 10617, Taiwan/National Center for Theoretical Sciences, Taipei Office, TaiwanUniversit Montpellier 2, CNRS-LIRMM, UMR5506 161 rue Ada, 34095 Montpellier Cedex 5, FranceLaBRI - University of Bordeaux 351 cours de la Liberation, 33405 Talence Cedex, FranceLaBRI - University of Bordeaux 351 cours de la Liberation, 33405 Talence Cedex, FranceLet Δ ≥ 4 be an integer. In this note, we prove that every planar graph with maximum degree Δ and girth at least 1 Δ+46 is strong (2Δ−1)-edgecolorable, that is best possible (in terms of number of colors) as soon as G contains two adjacent vertices of degree Δ. This improves [6] when Δ ≥ 6.https://doi.org/10.7151/dmgt.1763planar graphsedge coloring2-distance coloringstrong edgecoloring.
spellingShingle Jennhwa Chang Gerard
Montassier Mickael
Pêche Arnaud
Raspaud André
Strong Chromatic Index Of Planar Graphs With Large Girth
Discussiones Mathematicae Graph Theory
planar graphs
edge coloring
2-distance coloring
strong edgecoloring.
title Strong Chromatic Index Of Planar Graphs With Large Girth
title_full Strong Chromatic Index Of Planar Graphs With Large Girth
title_fullStr Strong Chromatic Index Of Planar Graphs With Large Girth
title_full_unstemmed Strong Chromatic Index Of Planar Graphs With Large Girth
title_short Strong Chromatic Index Of Planar Graphs With Large Girth
title_sort strong chromatic index of planar graphs with large girth
topic planar graphs
edge coloring
2-distance coloring
strong edgecoloring.
url https://doi.org/10.7151/dmgt.1763
work_keys_str_mv AT jennhwachanggerard strongchromaticindexofplanargraphswithlargegirth
AT montassiermickael strongchromaticindexofplanargraphswithlargegirth
AT pechearnaud strongchromaticindexofplanargraphswithlargegirth
AT raspaudandre strongchromaticindexofplanargraphswithlargegirth