Stratifying ideals and twisted products

Abstract

We study stratifying ideals for rings in the context of relative homological algebra. Using LU-decompositions, which are a special type of twisted products, we give a sufficient condition for an idempotent ideal to be (relative) stratifying.

14 pages

References in corpus (2)

• Characteristic-free resolutions of Weyl and Specht modules
• Homological properties of quantised Borel-Schur algebras and resolutions of quantised Weyl modules