Ceballos–Pons realization conjecture for the -permutahedron
Ceballos–Pons realization conjecture for the -permutahedron
Let be a weak composition. The -permutahedron is the polyhedral subdivision associated with the -weak order.
Ceballos–Pons realization conjecture. The -permutahedron can be realized as a polyhedral subdivision of a polytope that is combinatorially isomorphic to the zonotope
where is the canonical basis of , and is the convex hull of and .
This conjecture seeks a geometric realization of the -weak order, whose lattice structure was proved by Ceballos and Pons. The source does not provide evidence of a resolution.
Progress summary
Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.
Sources & referencesView supporting material
Primary source
Rafael S. González D'León, Alejandro H. Morales, Eva Philippe, Daniel Tamayo Jiménez and Martha Yip, “Realizing the s-permutahedron via flow polytopes”, arXiv:2307.03474 (2023).
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