DOI: 10.1002/jgt.70107 ISSN: 0364-9024

Maximum Partial List H‐Coloring on P5‐Free Graphs in Polynomial Time

Daniel Lokshtanov, Paweł Rzążewski, Saket Saurabh, Roohani Sharma, Meirav Zehavi

ABSTRACT

In this article we show that

Maximum Partial List 
Coloring
is polynomial‐time solvable on ‐free graphs for every fixed graph . In particular, this implies that
Maximum 
Colorable Subgraph
is polynomial‐time solvable on ‐free graphs. This answers an open question from Agrawal, Lima, Lokshtanov, Rzążewski, Saurabh, and Sharma [SODA 2024]. This also improves the ‐time algorithm for
Maximum Partial 
Coloring
, where is the size of the largest clique in , by Chudnovsky, King, Pilipczuk, Rzążewski, and Spirkl [SIDMA 2021], to polynomial‐time algorithm (independent of the maximum clique size of the graph).

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