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The number of colorings of the middle layers of the Hamming cube

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arxiv 2304.03203 v2 pith:YDPA65QX submitted 2023-04-06 math.CO

The number of colorings of the middle layers of the Hamming cube

classification math.CO
keywords coloringscontainergraphlayersmathcalmethodnumbersapozhenko
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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abstract

For an odd integer $n = 2d-1$, let $\mathcal B_d$ be the subgraph of the hypercube $Q_n$ induced by the two largest layers. In this paper, we describe the typical structure of proper $q$-colorings of $V(\mathcal B_d)$ and give asymptotics on the number of them. The proofs use various tools including information theory (entropy), Sapozhenko's graph container method and a recently developed method of M. Jenssen and W. Perkins that combines Sapozhenko's graph container lemma with the cluster expansion for polymer models from statistical physics.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Range of random $\mathbb Z$-homomorphisms on weak expanders

    math.CO 2026-04 unverdicted novelty 7.0

    Random Z-homomorphisms on weak expanders are O(log log n)-flat with high probability, answering a question of Peled-Samotij-Yehudayoff, and at most 5-valued on Hamming-cube middle layers.