Breaking small automorphisms by list colourings

Abstract For a graph , we define a small automorphism as one that maps some vertex into its neighbour. We investigate the edge colourings of that break every small automorphism of . We show that such a colouring can be chosen from any set of lists of length 3. In addition, we show that any set of lists of length 2 on both edges and vertices of yields a total colouring which breaks all the small automorphisms of . These results are sharp, and they match the known bounds for the nonlist variant.

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Publication Details

Journal
Journal of Graph Theory
Published
2024-09-16
DOI
https://doi.org/10.1002/jgt.23181
Primary Topic
Graph Labeling and Dimension Problems
Type
article
Field-Weighted Citation Impact
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article

Breaking small automorphisms by list colourings

Marcin Stawiski, Jakub Kwaśny
Journal of Graph Theory
Graph Labeling and Dimension Problems
article

Breaking small automorphisms by list colourings

Marcin Stawiski, Jakub Kwaśny
article en

Abstract

Abstract For a graph , we define a small automorphism as one that maps some vertex into its neighbour. We investigate the edge colourings of that break every small automorphism of . We show that such a colouring can be chosen from any set of lists of length 3. In addition, we show that any set of lists of length 2 on both edges and vertices of yields a total colouring which breaks all the small automorphisms of . These results are sharp, and they match the known bounds for the nonlist variant.

Journal of Graph TheoryVol. 108(2)
AGH University of Krakow (PL)
Openalex Percentile: Top 81%
Graph Labeling and Dimension Problems
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