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Extended TFT realization of graph coloring via 2-categorical bundles

Develop an extended topological field theory framework in which graph colorings are realized as sections of bundles defined at the level of 2-categories, as in the construction of bundles over 2-categories described in Construction cons:bundle_2-cat, thereby formalizing the coloring process as higher-categorical sections.

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Background

The paper interprets local colorings as sections over basic-gons and sketches a higher-categorical notion of bundles and sections at the level of 2-categories. This suggests an extended TFT where objects, 1-morphisms, and 2-morphisms encode the local-to-global structure of colorings.

The conjecture calls for constructing such an extended TFT so that the coloring process matches 2-categorical sections, providing a conceptual foundation for the gluing rules used in the lattice TFT χ{cw}.

References

We conclude this section with the conjecture that there is an extended TFT approach to graph coloring where the coloring processing is given by sections of bundles at the level of $2$-category as defined in \cref{cons:bundle_2-cat}.

Coloring Trivalent Graphs: A Defect TFT Approach (2410.00378 - Kumar, 1 Oct 2024) in End of Section 7.1 (Bundles at the level of n-category)