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                Canonically fibered surfaces of general type

                發布者:文明辦作者:發布時間:2020-06-17瀏覽次數:82


                主講人:呂鑫 華東師範大學教授


                時間:2020年6月18日10:00


                地點:騰訊會議 467293340


                舉辦單位:數理學院


                內容介紹: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 $4$.