Bridging meadows and sheaves

We bridge sheaves of rings over a topological space with common meadows (algebraic structures where the inverse for multiplication is a total operation). More specifically, we show that, given a topological space X, the subclass of pre-meadows with a, coming from the lattice of open sets of X, and the class of presheaves over X are the same structure. Furthermore, we provide a construction that, given a sheaf of rings F on X, produces a common meadow as a disjoint union of elements of the form F(U) indexed over the open subsets of X. As a consequence, we see that the process of going from a presheaf to a sheaf (called sheafification) allows us to get a way to construct a common meadow from a given pre-meadow as above.

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Publication Details

Journal
Communications in Algebra
Published
2025-11-05
DOI
https://doi.org/10.1080/00927872.2025.2573809
Primary Topic
Advanced Algebra and Logic
Type
article
Field-Weighted Citation Impact
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article

Bridging meadows and sheaves

Bruno Dinis, Pedro Macías Marques, João Dias
Communications in Algebra
Advanced Algebra and Logic
article

Bridging meadows and sheaves

Bruno Dinis, Pedro Macías Marques, João Dias
article en

Abstract

We bridge sheaves of rings over a topological space with common meadows (algebraic structures where the inverse for multiplication is a total operation). More specifically, we show that, given a topological space X, the subclass of pre-meadows with a, coming from the lattice of open sets of X, and the class of presheaves over X are the same structure. Furthermore, we provide a construction that, given a sheaf of rings F on X, produces a common meadow as a disjoint union of elements of the form F(U) indexed over the open subsets of X. As a consequence, we see that the process of going from a presheaf to a sheaf (called sheafification) allows us to get a way to construct a common meadow from a given pre-meadow as above.

Communications in AlgebraVol. 54(5)
University of Évora (PT), Brazilian Society of Computational and Applied Mathematics (BR)
Openalex Percentile: Top 66%
Advanced Algebra and Logic
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Bridging meadows and sheaves — Bruno Dinis, Pedro Macías Marques, et al. · Communications in Algebra (2025) | TGRS Research Map | TGRS