应pc加拿大预测准确率邀请，西南大学喻厚义副教授于2017年11月12日访问我校并作学术报告。
      报告题目：Weak composition quasi-symmetric functions and Rota-Baxter algebras
      时       间：   11月12日（星期日) 20：30
      地       点：  齐云楼911多媒体报告厅
      报  告  人：   喻厚义
Abstract: We introduce the Hopf algebra of quasi-symmetric functions with semigroup exponents generalizing the Hopf algebra QSym of quasi-symmetric functions. As a special case we obtain the Hopf algebra WCQSym of weak composition quasi-symmetric functions, which provides a framework for the study of a question proposed by G.-C. Rota relating symmetric type functions and Rota-Baxter algebras. We show that QSym is a Hopf subalgebra and a Hopf quotient algebra of WCQSym. Rota’s question is addressed by identifying WCQSym with the free commutative unitary Rota-Baxter algebra of weight 1 on one generator. Extending the close relationship between
quasi-symmetric functions and multiple zeta values, weighted multiple zeta values and a q-analog of multiple zeta values are investigated, and a decomposition formula is established.
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报告人简介
    喻厚义，西南大学副教授，2012年博士毕业于上海交通大学, 主要研究方向为代数组合理论.发表SCI论文10余篇，主持国家自然科学基金天元基金和青年基金各一项，重庆市自然科学基金一项. 

甘肃省高校应用数学与复杂系统省级重点实验室
pc加拿大预测准确率
萃英学院
2017年11月9日