報(bào)告題目：Modular extensions and orbifold theory
報(bào)告人： 董崇英
報(bào)告時(shí)間：2025年6月11日上午10:50-11:40
報(bào)告地點(diǎn)：kaiyun開(kāi)云官方網(wǎng)站犀浦校區(qū)X30425
摘要：For any finite group G, its module category Rep(G) is a symmetric braided fusion category. The modular extensions of Rep(G) have been studied extensively by Muger, Drinfeld-Gelaki-Nikshych-Ostrik, Lan-Kong-Wen and others. In this talk we will present a connection between modular extensions and orbifold theory, and discuss how this connection leads to a proof of a conjecture by Dijkgraaf-Pasquier-Roche on holomorphic orbifold theory.
報(bào)告人簡(jiǎn)介：董崇英，美國(guó)加州大學(xué)Santa Cruz分校終身教授，國(guó)際上無(wú)限維李代數(shù)和頂點(diǎn)算子代數(shù)領(lǐng)域最杰出的數(shù)學(xué)家之一，在Acta Math.，Duke Math.，Adv. Math.，Comm. Math. Phys.等國(guó)際著名期刊發(fā)表論文100多篇，總引用超過(guò)4000次，其中包括Fields獎(jiǎng)獲得者Drinfeld，Zelmanov和Borcherds以及著名數(shù)學(xué)家如Beilinson和Kac等人的重要引用。
