云亭数学讲坛2025第83讲——王登银教授

Symplectic groups acting as automorphism groups of the general position graphs over symplectic spaces

发布者:徐有基发布时间:2025-10-30浏览次数:10


 应甘肃省数学与统计学基础学科研究中心邀请,中国矿业大学王登银教授将作学术报告。

报告题目:Symplectic groups acting as automorphism groups of the general position graphs over symplectic spaces

报告摘要:In the present paper, we concentrate our attention on   automorphism groups of the general position graph of a vector space version. Let Fq denote a field with q elements, and let V be a 2m-dimensional symplectic space over Fq endowed with a non-degenerate alternate inner product  (* , *)  with respect to a non-singular alternate matrix. For a subspace W of V let W⊥ denote the orthogonal complement of W in V. A flag of V is a set f of nontrivial subspaces of V such that UW or WU for all pairs U,Wf . Two flags f and g are said to be in general position if UW⊥ or WU for all Uf and Wg. The general position graph G(V,T) over V of type T is defined to be a graph, whose vertex set consists of all flags of V of type T, and two vertices are adjacent when the corresponding flags are in general position.  

In this talk, we determine the automorphism group of G(V,T) if T has type T={k,l} with k + l +1 ≤ 2m.

报告时间:20251119:00

报告地点:致勤楼C604报告厅

邀 请 人:乔虎生教授

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报告人简介

 王登银,男,19652月出生,籍贯:安徽合肥。1998年毕业于中国科学技术大学,获理学博士学位。现为中国矿业大学教授、博士生导师,基础数学研究所所长, 数学学科博士点负责人。从事典型群、李型单群、代数群、李代数等领域的理论研究,也从事图论在目标定位,图像恢复等领域的应用研究。以第一或通讯作者在中国数学会T类期刊上发表被SCI检索的学术论文138篇。连续主持国家自然科学基金面上项目4项。



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