报告题目:On ghost cluster tilting subcategories
报 告 人:杨武忠 讲师 (西北大学)
报告时间:2019年12月27日(星期五)下午17:30-18:00
报告地点:4号楼318室
邀 请 人:何志坚 副教授
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数学学院
2019年12月26日
报告摘要:
For a triangulated category C with a cluster tilting subcategory T which contains infinitely many indecomposable objects, the notion of weak T[1]-cluster tilting subcategories of C is introduced. We use them to study the τ-tilting theory in the module category over T. Inspired by the work of Iyama-Jørgensen-Yang, we introduce the notion of τ-tilting subcategories of mod T, and show that there exists a bijection between weak T[1]-cluster tilting subcategories of C and support τ-tilting subcategories of mod T. Moreover, we describe the subcategories of mod T which correspond to cluster tilting subcategories of C. This generalizes and improves results by Adachi-Iyama-Reiten, Beligiannis, and Yang-Zhu.
报告人简介:
杨武忠,西北大学数学学院讲师,目前主要从事代数表示论、同调代数等方向的研究,现主持国家自然科学基金青年项目,参与多项国家自然科学基金面上、青年项目。已在Transactions of AMS、Pacific J. Math.等杂志上发表论文。