报告题目: The 2-closure of permutation groups and the isomorphism problem for schurian coherent configurations
报 告 人: Andrey Vasilyev (索博列夫数学研究所&新西伯利亚州立大学，俄罗斯)
报告时间: 2019年4月12日(周五)下午16：30
报告地点: 磬苑校区数学科学学院 H 306
欢迎各位老师、同学届时前往！
科学技术处
2019年4月4日
报告摘要:
Starting in the late 1960s, the theory of coherent configurations has now become one of the central parts of algebraic combinatorics. The main goal of this theory is to provide a common method to study symmetries of combinatorial objects. So it is not surprising that permutation groups provide a rich source of coherent configurations. In fact, there is a natural Galois correspondence between subgroups of symmetric group on a set Ωand coherent configurations defined on Ω. The closed objects with respect to that correspondence are 2-closed permutation groups and schurian coherent configurations. In this talk we concentrate on the isomorphism problem for two important classes of schurian coherent configurations: 3/2-homogeneous and of rank 3.