报告题目：PBW-deformations of type $\mathbb{A}_n$ quantum
groups via multiple Ore extensions
报 告 人：王顶国 教授（曲阜师范大学）
报告时间：2019年4月29日（周一）下午15:00-16:00
报告地点：磬苑校区数学楼H306报告厅
报告摘要：The notion of multiple Ore extension is introduced as a natural generalization of Ore extensions and double Ore extensions. For a PBW-deformation $\mathcal{B}_q(\mathfrak{sl}(n+1, \mathbb{C}))$ of type $\mathbb {A}_n$ quantum group, we explicitly obtain the commutation relations of its root vectors, then show that it can be realized via a series of multiple Ore extensions, which we call a ladder Ore extension of type $(1, 2, \cdots, n)$. Moreover, we analyze the quantum algebras $\mathcal{B}_q(\mathfrak{g})$ of type $\mathbb {D}_4$, $\mathbb{B}_2$ and $\mathbb{G}_2$ and give some examples and counterexamples that can be realized by a ladder Ore extension. This is based on a joint work with Yongjun Xu and Hualin Huang.
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科学技术处
2019年4月25日