论文标题
相对MMP没有Q因素
Relative MMP without Q-factoriality
论文作者
论文摘要
我们认为不是Q-Factorial的品种的最小模型程序。我们表明,在许多情况下,其步骤比预期的要简单。特别是,所有翻转均为1汇编。主要的应用是记录终端奇点,从HACON的几个定理中删除了较早的Q因子假设 - Witaszek和de〜fernex-kollár-Xu。版本2:许多小变化。
We consider the minimal model program for varieties that are not Q-factorial. We show that, in many cases, its steps are simpler than expected. In particular, all flips are 1-complemented. The main applications are to log terminal singularities, removing the earlier Q-factoriality assumption from several theorems of Hacon--Witaszek and de~Fernex--Kollár--Xu. Version 2: many small changes.