Hochschild polytopes

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Hauptverfasser: Pilaud, Vincent, Poliakova, Daria
Format: Preprint
Veröffentlicht: 2023
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author Pilaud, Vincent
Poliakova, Daria
author_facet Pilaud, Vincent
Poliakova, Daria
contents The $(m,n)$-multiplihedron is a polytope whose faces correspond to $m$-painted $n$-trees, and whose oriented skeleton is the Hasse diagram of the rotation lattice on binary $m$-painted $n$-trees. Deleting certain inequalities from the facet description of the $(m,n)$-multiplihedron, we construct the $(m,n)$-Hochschild polytope whose faces correspond to $m$-lighted $n$-shades, and whose oriented skeleton is the Hasse diagram of the rotation lattice on unary $m$-lighted $n$-shades. Moreover, there is a natural shadow map from $m$-painted $n$-trees to $m$-lighted $n$-shades, which turns out to define a meet semilattice morphism of rotation lattices. In particular, when $m=1$, our Hochschild polytope is a deformed permutahedron whose oriented skeleton is the Hasse diagram of the Hochschild lattice.
format Preprint
id arxiv_https___arxiv_org_abs_2307_05940
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Hochschild polytopes
Pilaud, Vincent
Poliakova, Daria
Combinatorics
52B11, 52B12, 05A15, 05E99, 06B10
The $(m,n)$-multiplihedron is a polytope whose faces correspond to $m$-painted $n$-trees, and whose oriented skeleton is the Hasse diagram of the rotation lattice on binary $m$-painted $n$-trees. Deleting certain inequalities from the facet description of the $(m,n)$-multiplihedron, we construct the $(m,n)$-Hochschild polytope whose faces correspond to $m$-lighted $n$-shades, and whose oriented skeleton is the Hasse diagram of the rotation lattice on unary $m$-lighted $n$-shades. Moreover, there is a natural shadow map from $m$-painted $n$-trees to $m$-lighted $n$-shades, which turns out to define a meet semilattice morphism of rotation lattices. In particular, when $m=1$, our Hochschild polytope is a deformed permutahedron whose oriented skeleton is the Hasse diagram of the Hochschild lattice.
title Hochschild polytopes
topic Combinatorics
52B11, 52B12, 05A15, 05E99, 06B10
url https://arxiv.org/abs/2307.05940