應yl7703永利官網(wǎng)羅彥鋒教授和段冰博士的邀請,四川大學付昌建教授、耿圣飛副教授將于2021年3月18日進行線上學術報告。
題目:On cluster categories of weighted projective lines with at most three weights
時間:2021年3月18日(周四),上午9:00—10:00 (北京時間)
騰訊會議 ID:95775830584,會議密碼:125914
(鏈接:https://meeting.tencent.com/s/coCmTiarQPPu)
摘要:Let $\mathbb{X}$ be a weighted projective line and $\mathcal{C}_\mathbb{X}$ the associated cluster category. It is known that $\mathcal{C}_\mathbb{X}$ can be realized as a generalized cluster category of quiver with potential. In this talk, under the assumption that $\mathbb{X}$ has at most three weights or is of tubular type, we prove that if the generalized cluster category $\mathcal{C}_{(Q,W)}$ of a Jacobi-finite non-degenerate quiver with potential $(Q,W)$ shares a 2-CY tilted algebra with $\mathcal{C}_\mathbb{X}$, then $\mathcal{C}_{(Q,W)}$ is triangle equivalent to $\mathcal{C}_\mathbb{X}$. As a byproduct, a 2-CY tilted algebra of $\mathcal{C}_\mathbb{X}$ is determined by its quiver provided that $\mathbb{X}$ has at most three weights. In the end, for any weighted projective line $\mathbb{X}$ with at most three weights, we also obtain a realization of $\mathcal{C}_\mathbb{X}$ via Buan-Iyama-Reiten-
Scott's construction of $2$-CY categories arising from preprojective algebras. This talk is based on joint work with Changjian Fu.
歡迎廣大師生光臨!
報告人簡介
耿圣飛,在四川大學數(shù)學院分別獲得學士、碩士、博士學位,畢業(yè)后留校任教,現(xiàn)任四川大學數(shù)學學院副教授,研究方向:代數(shù)表示論,在Adv. Math.,Math. Zeit.、J. Algebra等高水平SCI雜志發(fā)表學術論文12篇。
時間:2021年3月18日(周四),上午 10:00—11:00 (北京時間)
騰訊會議 ID:95775830584,會議密碼:125914
(鏈接:https://meeting.tencent.com/s/coCmTiarQPPu)
摘要:我們將回顧叢代數(shù)中的兩類整數(shù)向量:c-向量和f-向量。利用f-向量我們給出叢復形上的一類新的相容性函數(shù),該函數(shù)可以看作Fomin和Zelevinsky關于有限型叢復形上的經(jīng)典相容性函數(shù)的推廣。我們將介紹此相容性函數(shù)的性質(zhì)和待解決問題。該報告基于與Yasuaki Gyoda的合作(arXiv:1911.07193).
歡迎廣大師生光臨!
報告人簡介
付昌建,四川大學數(shù)學學院教授,研究方向:代數(shù)表示論。付昌建教授,在Adv. Math.,Trans. Amer. Math. Soc. (單篇引用高達60次),J. Lond. Math. Soc.,Math. Zeit.、J. Algebra等高水平雜志發(fā)表學術論文16篇。
甘肅省應用數(shù)學與復雜系統(tǒng)重點實驗室
yl7703永利官網(wǎng)
萃英學院
2021年3月16日