报告题目:Leavitt path algebras of bifurcation-splittings
报告人:李换换 副教授 安徽大学
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邀请人:杨丹丹
报告时间:2025年4月27日(周日) 9:00
报告地点:南校区会议中心113会议室
报告人简介:李换换,安徽大学数学科学学院副教授。2016 年博士毕业于中国科学技术大学,导师陈小伍教授,2016 年至2019 年在澳大利亚西悉尼大学从事博士后研究工作。入选省级青年人才。已在J. Algebra, Ann. K-theory, J. Pure App. Algebra, Algebra Number Theory, Algebr. Represent. Theory 等期刊上发表学术论文二十余篇,已主持国家自然科学基金青年基金1 项。
报告摘要:For a given graph E and a bifurcation vertex v in E, we construct the new graph E[v] which is called a bifurcation-splitting of E. We establish an injective homomorphism f: LK(E) -→ LK(E[v]) of Leavitt path algebras over a field K as Z-graded algebras. We also give a combinatorics sufficient and necessary condition for this homomorphism to be an isomorphism of Z-graded algebras. It turns out that these two Leavitt path algebras are Z-graded isomorphic if and only if f is an isomorphism as Z-graded algebras.
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