Canonically fibered surfaces of general type

主讲人：吕鑫 华东师范大学教授

时间：2020年6月18日10：00

地点：腾讯会议 467293340

举办单位：数理学院

内容介绍：The canonical map of a surface of general type is called fibered, if its  canonical map induces a fibration. Beauville showed that the genus of such a  fibration is bounded from above by $5$ when the geometric genus is large.  Examples with the genus equal to $2$ or $3$ have been constructed. Xiao asked  whether there exists a surface of general type with large geometric genus, whose  canonical map is fibered of genus greater than $3$? In this talk, I will report  such examples with the genus equal to $4$.