报告人：马世美（东北大学秦皇岛分校教授）
报告时间：2023年10月24日(周二) 上午9:00
腾讯会议ID：849 321 877
联系人：林丽双教授
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报告摘要：In algebraic combinatorics, context-free grammar, also known as Chen's grammar, is defined by a formal derivative based on a set of substituion rules. In the past decade, the method of context-free grammars has revealed many interesting properties of various combinatorial structures, including permutations, increasing trees and perfect matchings. In this talk, we discuss our recent results on several Eulerian-type polynomials, including Eulerian polynomials and Narayana polynomials, r-colored Eulerian polynomials, ascent-plateau polynomials, left ascent-plateau polynomials and k-order Eulerian polynomials. In the end of this talk, we discuss two problems.
报告人简介：马世美，东北大学秦皇岛分校教授，主要研究排列统计量理论和文法理论。特别是提出了文法变换法的定义，利用该方法可以发现并简洁地推导出一些重要的组合展开式。取得的多项成果先后发表在Journal of Combinatorial Theory, series A、European Journal of Combinatorics以及Advances in Applied Mathematics等组合数学国际权威期刊上。目前主持国家自然科学基金1项，已主持完成国家自然科学基金2项以及省部级基金多项，已发表被SCI收录的学术论文40余篇。
理学院
2023年10月19日
