Title of article :
Three coloring planar graphs without cycles of length from 4 to 6 or seven cycles with close triangles
Author/Authors :
Whalen، نويسنده , , Peter، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
6
From page :
819
To page :
824
Abstract :
Steinbergʼs Conjecture states that any planar graph without cycles of length four or five is three colorable. Borodin, Glebov, Montassier, and Raspaud showed that planar graphs without cycles of length four, five, or seven are three colorable and Borodin and Glebov showed that planar graphs without five cycles or triangles at distance at most two apart are three colorable. We prove a statement similar to both of these results: that any planar graph with no cycles of length four through six or cycles of length seven with incident triangles distance exactly two apart are three colorable.
Keywords :
Planar graph , Steinberg?s Conjecture , Coloring , graph
Journal title :
Electronic Notes in Discrete Mathematics
Serial Year :
2011
Journal title :
Electronic Notes in Discrete Mathematics
Record number :
1455963
Link To Document :
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