Classification of external Zonotopal algebras
Gleb Nenashev

TL;DR
This paper classifies external Zonotopal algebras based on hyperplane arrangements, establishing a correspondence with zonotopes and regular matroids, and discusses related conjectures for central algebras.
Contribution
It provides a complete classification of external Zonotopal algebras and links unimodular cases to regular matroids, advancing the understanding of their algebraic structure.
Findings
External algebras classified by zonotopes
Unimodular external algebras correspond to regular matroids
Formulation of a conjecture for central algebras
Abstract
In this paper we work with power algebras associated to hyperplane arrangements. There are three main types of these algebras, namely, external, central, and internal zonotopal algebras. We classify all external algebras up to isomorphism in terms of zonotopes. Also, we prove that unimodular external zonotopal algebras are in one to one correspondence with regular matroids. For the case of central algebras we formulate a conjecture.
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