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On two questions about circular choosability
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AbstractWe answer two questions of Zhu on circular choosability of graphs. We show that the circular list chromatic number of an even cycle is equal to 2 and give an example of a graph for which the infimum in the definition of the circular list chromatic number is not attained. © 2008 Wiley Periodicals, Inc. J Graph Theory 58:261‐269, 2008
Title: On two questions about circular choosability
Description:
AbstractWe answer two questions of Zhu on circular choosability of graphs.
We show that the circular list chromatic number of an even cycle is equal to 2 and give an example of a graph for which the infimum in the definition of the circular list chromatic number is not attained.
© 2008 Wiley Periodicals, Inc.
J Graph Theory 58:261‐269, 2008.
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