The content discusses the conjecture in algorithmic model theory regarding the fixed-parameter tractability of first-order logic model checking on hereditary graph classes based on monadic dependence. It introduces the concept of flip-breakability as a combinatorial characterization of monadically dependent graph classes, highlighting their structural properties. The article presents a detailed technical overview, including sequences, graphs, flips, and logic. It delves into constructing insulators and prepatterns to demonstrate the existence of large patterns in monadically independent classes. The discussion also covers cleaning up prepatterns and addressing hardness through reductions from general graphs. Additionally, it explores the relationship between flips, forbidden induced subgraphs, and logical interpretations in proving the tractability limits of monadically dependent classes.
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by Jan ... om arxiv.org 03-25-2024
https://arxiv.org/pdf/2403.15201.pdfDiepere vragen