Polychromatic colorings of plane graphs

N. Alon; R. Berke; K. Buchin; M. Buchin; P. Csorba; S. Shannigrahi; B. Speckmann; P. Zumstein

doi:10.1145/1377676.1377734

Polychromatic colorings of plane graphs

N. Alon, R. Berke, K. Buchin, M. Buchin, P. Csorba, S. Shannigrahi, B. Speckmann, P. Zumstein

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

10 Citaten (Scopus)

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We show that the vertices of any plane graph in which every face is of size at least g can be colored by (3g Àý 5)=4 colors so that every color appears in every face. This is nearly tight, as there are plane graphs that admit no vertex coloring of this type with more than (3g+1)=4 colors. We further show that the problem of determining whether a plane graph admits a vertex coloring by 3 colors in which all colors appear in every face is NP-complete even for graphs in which all faces are of size 3 or 4 only. If all faces are of size 3 this can be decided in polynomial time.

Originele taal-2	Engels
Titel	Proceedings 24th Annual ACM Symposium on Computational Geometry (SoCG'08, College Park MD, USA, June 9-11, 2008)
Plaats van productie	New York NY
Uitgeverij	Association for Computing Machinery, Inc
Pagina's	338-345
ISBN van geprinte versie	978-1-60558-071-5
DOI's	https://doi.org/10.1145/1377676.1377734
Status	Gepubliceerd - 2008

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10.1145/1377676.1377734

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title = "Polychromatic colorings of plane graphs",

abstract = "We show that the vertices of any plane graph in which every face is of size at least g can be colored by (3g {\`A}{\'y} 5)=4 colors so that every color appears in every face. This is nearly tight, as there are plane graphs that admit no vertex coloring of this type with more than (3g+1)=4 colors. We further show that the problem of determining whether a plane graph admits a vertex coloring by 3 colors in which all colors appear in every face is NP-complete even for graphs in which all faces are of size 3 or 4 only. If all faces are of size 3 this can be decided in polynomial time.",

author = "N. Alon and R. Berke and K. Buchin and M. Buchin and P. Csorba and S. Shannigrahi and B. Speckmann and P. Zumstein",

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doi = "10.1145/1377676.1377734",

language = "English",

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Polychromatic colorings of plane graphs. / Alon, N.; Berke, R.; Buchin, K.; Buchin, M.; Csorba, P.; Shannigrahi, S.; Speckmann, B.; Zumstein, P.

Proceedings 24th Annual ACM Symposium on Computational Geometry (SoCG'08, College Park MD, USA, June 9-11, 2008). New York NY : Association for Computing Machinery, Inc, 2008. blz. 338-345.

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

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AU - Alon, N.

AU - Berke, R.

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AU - Speckmann, B.

AU - Zumstein, P.

PY - 2008

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N2 - We show that the vertices of any plane graph in which every face is of size at least g can be colored by (3g Àý 5)=4 colors so that every color appears in every face. This is nearly tight, as there are plane graphs that admit no vertex coloring of this type with more than (3g+1)=4 colors. We further show that the problem of determining whether a plane graph admits a vertex coloring by 3 colors in which all colors appear in every face is NP-complete even for graphs in which all faces are of size 3 or 4 only. If all faces are of size 3 this can be decided in polynomial time.

AB - We show that the vertices of any plane graph in which every face is of size at least g can be colored by (3g Àý 5)=4 colors so that every color appears in every face. This is nearly tight, as there are plane graphs that admit no vertex coloring of this type with more than (3g+1)=4 colors. We further show that the problem of determining whether a plane graph admits a vertex coloring by 3 colors in which all colors appear in every face is NP-complete even for graphs in which all faces are of size 3 or 4 only. If all faces are of size 3 this can be decided in polynomial time.

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DO - 10.1145/1377676.1377734

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BT - Proceedings 24th Annual ACM Symposium on Computational Geometry (SoCG'08, College Park MD, USA, June 9-11, 2008)

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Polychromatic colorings of plane graphs

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