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The proper conflict-free k -coloring problem and the odd k -coloring problem are NP-complete on bipartite graphs

Jungho Ahn, Seonghyuk Im, Sang-il Oum

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Source: Crossref

Published: Dec 1, 2025

DOI: 10.1016/j.dam.2025.06.026

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The proper conflict-free k -coloring problem and the odd k -coloring problem are NP-complete on bipartite graphs — Mathematical Frontier Network