报告题目:Groups whose Chermak-Delgado lattice is a quasi-antichain
报告人:安立坚教授(山西师范大学 数学与计算机科学学院)
报告时间:2022年11月30日16:30-17:30
报告地点:腾讯会议 245-272-621,密码1130
主持人:乔守红
报告摘要:A quasi-antichain is a lattice consisting of a maximum, a minimum, and the atoms of the lattice. The width of a quasi-antichain is the number of atoms. For a positive integer w>2, a quasi-antichain of width w is denoted by Mw. It is proved that Mw can be as a Chermak-Delgado lattice of a finite group if and only if w=1+pa for some positive integer a and some prime p. Let t be the number of abelian atoms in a quasi-antichain Chermak-Delgado lattice. We completely answer the following question: which values of t are possible?
专家简介:安立坚,教授、博士生导师,山西师范大学数学与计算机科学学院院长,山西省数学会副理事长。主要研究方向为群论,在J. Algebra,Sci. China Math.等国内外重要刊物上发表论文20余篇,出版专著两部,主持国家自然科学基金面上项目2项。解决了群论领域若干重要问题,多项成果被著名群论学家Berkovich和Janko在其专著(Groups of Prime Power Order, 2016)中评价为“基本结果”。应邀在 2019 年美国召开的国际群论会议上做50分钟大会报告。