报告题目:Approximation theory and comma categories
报告人:胡江胜 (江苏理工学院)
报告时间:2021年12月7日下午3:00
Abstract:Let T be a right exact functor from an abelian category B into another abelian category A. Then there exists a new abelian category, named comma category and denoted by (T ↓ A). In this talk, we will characterize when special precovering classes in abelian categories A and B can induce special precovering classes in (T ↓ A). As a consequence, we give new information on the open problem that how to find general classes of rings for which modules have special Gorenstein projective precovers. The talk is based on a recent joint work with Haiyan Zhu.
报告人简介:胡江胜,江苏理工学院副教授。2013年博士毕业于南京大学,2016-2018年在南京师范大学从事博士后研究。主要研究方向: 同调代数、代数表论理论, 在《J. Algebra》、《J. Pure Appl. Algebra》、《Algebr. Represent. Theory》、《Sci. China Math.》等国际SCI期刊上发表学术论文20余篇。先后主持国家自然科学基金青年基金项目与国家自然科学基金面上项目。