Universal localizations of d-homological pairs

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Authors: Francesca Fedele
Cited by: 0
References: 21

Abstract

Let k be an algebraically closed field and Φ a finite-dimensional k-algebra. The universal localization Φ→ΦS of Φ with respect to a set of morphisms between finitely generated projective Φ-modules S always exists. Moreover, when Φ is hereditary, Krause and Šťovíček proved that the universal localizations of Φ are in bijective correspondence with various natural structures. Taking inspiration from an alternative definition of universal localizations involving a triangulated subcategory of Dperf(Φ), we introduce a higher analogue of universal localizations—that is, fixing a positive integer d, we define universal localizations of d-homological pairs (Φ,F) with respect to suitable wide subcategories U of Db(modΦ). When gldimΦ≤d, we show that the result by Krause and Šťovíček has a (partial) higher analogue and that such universal localizations exist with respect to any choice of U with the required properties. Moreover, we show that in this setup, the base case of our definition and the definition of classic universal localization coincide.

Fields of Study & Subjects

Algebraic structures and combinatorial models Advanced Topics in Algebra Homotopy and Cohomology in Algebraic Topology

Publication details

Journal / source
Kyoto journal of mathematics
Publisher
Duke University Press
Volume
66
Issue
3
Pages
613-641
Publication date
14 May 2026
Language
EN