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 $4$.