加载中…
We classify rational elliptic and quasi-elliptic surfaces with global vector fields over arbitrary algebraically closed fields of characteristic different from . For every such surface, we determine the multiple and reducible fibers, the identity component of the automorphism scheme, and the moduli. As a corollary, we deduce that rational (quasi-)elliptic surfaces with global vector fields are Jacobian if and we describe all counterexamples in small characteristics.

生成讲解博客的中文版本

生成AI智能校验的中文版本