马德里竞技携手{十大滚球体育APP入口公布官方合作 - {十大滚球体育APP入口
On Rational Multisections of Conic Bundles
发布时间：2026年04月02日
浏览次数：723
发布者: Meng Yu
主讲人： Lena Ji (University of Illinois Urbana-Champaign) 对照阅读
活动时间： 从 2026-04-09 15:15 到 16:15 继续了解
场地： Room 77201, Jingchunyuan 78, BICMR 延伸阅读
Abstract: The Enriques criterion for unirationality of conic bundles states that if X is a conic bundle over P^2, then X is unirational if and only if the conic bundle admits a rational multisection. Furthermore, if X is unirational but not rational, then such a rational multisection necessarily has even degree. In this talk, we report on joint work in progress with Jeffrey Diller and Eric Riedl studying when such a conic bundle X -> P^2 admits a degree 2 rational multisection.
