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Bibliographic Details
Main Author: Campbell, Alexander
Format: Preprint
Published: 2026
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Online Access:https://arxiv.org/abs/2605.09427
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author Campbell, Alexander
author_facet Campbell, Alexander
contents We fix the notion of parity complex by a judicious selection from among the axioms originally considered by Street. We show that parity complexes so defined, together with the morphisms of parity complexes defined by Verity, form a category equivalent to the category of strong Steiner complexes (nés augmented directed complexes with strongly loop-free unital bases). To this end, we isolate the purely combinatorial structure possessed by the bases of free augmented directed complexes. This analysis reveals the essential advantage of Steiner's formalism to be that the role of subsets in Street's formalism is played instead by multisets.
format Preprint
id arxiv_https___arxiv_org_abs_2605_09427
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Parity complexes redux
Campbell, Alexander
Category Theory
18N30
We fix the notion of parity complex by a judicious selection from among the axioms originally considered by Street. We show that parity complexes so defined, together with the morphisms of parity complexes defined by Verity, form a category equivalent to the category of strong Steiner complexes (nés augmented directed complexes with strongly loop-free unital bases). To this end, we isolate the purely combinatorial structure possessed by the bases of free augmented directed complexes. This analysis reveals the essential advantage of Steiner's formalism to be that the role of subsets in Street's formalism is played instead by multisets.
title Parity complexes redux
topic Category Theory
18N30
url https://arxiv.org/abs/2605.09427