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arXiv 2609.16957math.RA

导出去环化水平的约化技术

Reduction techniques for the derived delooping levels

Kaili Wu, Jiaqun Wei, Dajun Liu, Weiqing Cao

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中文总结 AI 辅助

本文利用分裂扩张和再粘合两种约化技术,研究域上有限维代数导出去环化水平的有限性,建立了保持该有限性的去箭与去顶点操作,并通过实例验证了方法的有效性。

中文摘要 AI 辅助

导出去环化水平是一种最近引入的同调不变量,它为相反代数的有限维数提供了一个上界。在本文中,我们采用两种约化技术——分裂扩张和再粘合——来研究域上有限维代数的导出去环化水平的有限性。通过将分裂扩张理论应用于有界箭图代数,我们建立了保持导出去环化水平有限性的去箭操作。同时,利用再粘合技术,我们发展了具有相同有限性保持性质的去顶点操作。最后,我们给出几个例子来说明这些约化方法的适用性和有效性。

英文摘要

The derived delooping level is a recently introduced homological invariant that provides an upper bound for the finitistic dimension of the opposite algebra. In this paper, we employ two reduction techniques-cleft extensions and recollements-to study the finiteness of the derived delooping level of finite-dimensional algebras over a field. By applying the theory of cleft extensions to bound quiver algebras, we establish arrow-removal operations that preserve the finiteness of the derived delooping level. In parallel, using recollement techniques, we develop vertex-removal operations with the same finiteness-preserving property. We conclude with several examples illustrating the applicability and effectiveness of these reduction methods.

发表机构

  • Nanjing Forestry University(南京林业大学)
  • Zhejiang Normal University(浙江师范大学)
  • Anhui Polytechnic University(安徽工业大学)
  • Jiangsu Normal University(江苏师范大学)

机构由 AI 辅助整理,请以论文原文为准。

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