Universal log structures on semi-stable varieties

Universal log structures on semi-stable varieties
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半稳定品种的通用原木结构

DOI:
10.2748/tmj/1113247481
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发表时间:
2003
影响因子:
0.5
通讯作者:
Martin Olsson
Martin Olsson
中科院分区:
数学4区
文献类型:
--
作者:
Martin Olsson

文献摘要

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修正方案f:X → S的态射,它是平坦的,正确的,并且是“逐纤半稳定的”。设IV LS是S上的对数概型范畴上的函子,它与任意T关联成对(MX,f)的同构类,其中MX是X× ST上的一个对数结构,f:pr 2MT →MX是对数结构的态射,使得(X× ST,MX)→ T是一个对数光滑的、整数的和垂直的态射.本文的主要结果是,IV LS是表示的对数计划。在证明过程中,我们还推广了F.关于嵌入型和半稳定型对数结构的存在性。
Fix a morphism of schemes f : X → S which is flat, proper, and “fiber-by-fiber semi-stable”. Let IV LS be the functor on the category of log schemes over S which to any T associates the isomorphism classes of pairs (MX , f), where MX is a log structure on X×S T and f : pr∗ 2MT →MX is a morphism of log structures making (X×S T ,MX)→ T a log smooth, integral, and vertical morphism. The main result of this paper is that IV LS is representable by a log scheme. In the course of the proof we also generalize results of F. Kato on the existence of log structures of embedding and semi-stable type.