Year: 2026
Type: preprint
Abstract: Let \(Λ\) be a finite-dimensional Koszul algebra. Using a description of the linear part of minimal projective resolutions in terms of Koszul duality, we prove that \(Λ\) is absolutely Koszul if and only if its Koszul dual \(Λ^{!}\) is graded left co-coherent. We further show that an absolutely Koszul algebra of finite global linearity defect has finite graded finitistic dimension. Finally, we refine Koszul duality for finite-dimensional absolutely Koszul algebras. As a further application, we answer a question of Green et al.~\cite{12} by means of the Koszul dual algebra.
Source: arXiv (Cornell University)
Author: Bouhada, A. M.
Language: English
Subfield: Geometry and Topology
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
Funder: University of South Florida
OpenAlex ID: W7212018973