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arXiv · 2012.09926

Representing partition lattices through FCA

Mike Behrisch·Alain Chavarri Villarello·Edith Vargas-García
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Abstract

We investigate the standard context, denoted by $\mathbb{K}\left(\mathcal{L}_{n}\right)$, of the lattice $\mathcal{L}_{n}$ of partitions of a positive integer $n$ under the dominance order. Motivated by the discrete dynamical model to study integer partitions by Latapy and Duong Phan and by the characterization of the supremum and (infimum) irreducible partitions of $n$ by Brylawski, we show how to construct the join-irreducible elements of $\mathcal{L}_{n+1}$ from $\mathcal{L}_{n}$. We employ this construction to count the number of join-irreducible elements of $\mathcal{L}_{n}$, and show that the number of objects (and attributes) of $\mathbb{K}\left(\mathcal{L}_{n}\right)$ has order $\Theta(n^2)$.

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Mike Behrisch, Alain Chavarri Villarello, Edith Vargas-García. 2020-12-17. Representing partition lattices through FCA. https://doi.org/10.1007/978-3-030-77867-5_1

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