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Boolean combinations of graphs

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arxiv 2412.19551 v1 pith:HAO6J7ZK submitted 2024-12-27 math.CO cs.DM

classification math.COcs.DM
keywords booleancombinationsgraphscombinatorialobjectsaffectallowapplied
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abstract

Boolean combinations allow combining given combinatorial objects to obtain new, potentially more complicated, objects. In this paper, we initiate a systematic study of this idea applied to graphs. In order to understand expressive power and limitations of boolean combinations in this context, we investigate how they affect different combinatorial and structural properties of graphs, in particular $\chi$-boundedness, as well as characterize the structure of boolean combinations of graphs from various classes.

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  1. Set-defined graph classes: $\chi$-boundedness meets tropical algebra

    cs.DM 2026-07 accept novelty 8.0 of 10

    Full set-defined classes are polynomially χ-bounded iff they avoid high-chromatic shift graphs, decidable via tropical feasibility dual to mean-payoff games.

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