Relative p-adic Hodge theory, II: Imperfect period rings
Relative p-adic Hodge theory, II: Imperfect period rings
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发表时间：
2016-02
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通讯作者：
K. Kedlaya;Ruochuan Liu
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作者：
K. Kedlaya;Ruochuan Liu
在前一篇文章中，我们构造了一类与Q_p上任意adic空间相关联的（phi，Gamma）-模，并证明了这类（phi，Gamma）-模对应于根Q_p-局部系统，这类（phi，Gamma）-模涉及Scholze原根拓扑的周期环层。本文首先将刚性解析空间上的Kiehl凝聚层理论推广到adic空间上的伪凝聚层理论，然后构造了相应的伪凝聚（phi，Gamma）-模理论。然后，我们将这些对象与一个更明确的结构联系起来，如果空间配备了一个合适的无限etale覆盖;在这种情况下，人们可以分解周期层，并建立一个类似的Cherbonnier-Colmez定理关于p-adic Galois表示的过收敛。作为一个应用，我们表明，相对（φ，伽玛）-模块在我们的意义上与相对（φ，伽玛）-模块构造的Andreatta和Brinon在几何设置，后者可以被构造。作为另一个应用，我们建立了p-adic域上任意刚性解析空间上的伪凝聚（phi，Gamma）-模范畴是阿贝尔的，满足升链条件，并且在各种自然导函子（包括Hom，张量积和拉回）下是稳定的。应用程序的原etale局部系统的etale上同调将在随后的文件。
In a previous paper, we constructed a category of (phi, Gamma)-modules associated to any adic space over Q_p with the property that the etale (phi, Gamma)-modules correspond to etale Q_p-local systems; these involve sheaves of period rings for Scholze's pro-etale topology. In this paper, we first extend Kiehl's theory of coherent sheaves on rigid analytic spaces to a theory of pseudocoherent sheaves on adic spaces, then construct a corresponding theory of pseudocoherent (phi, Gamma)-modules. We then relate these objects to a more explicit construction in case the space comes equipped with a suitable infinite etale cover; in this case, one can decomplete the period sheaves and establish an analogue of the theorem of Cherbonnier-Colmez on the overconvergence of p-adic Galois representations. As an application, we show that relative (phi, Gamma)-modules in our sense coincide with the relative (phi, Gamma)-modules constructed by Andreatta and Brinon in the geometric setting where the latter can be constructed. As another application, we establish that the category of pseudocoherent (phi, Gamma)-modules on an arbitrary rigid analytic space over a p-adic field is abelian, satisfies the ascending chain condition, and is stable under various natural derived functors (including Hom, tensor product, and pullback). Applications to the etale cohomology of pro-etale local systems will be given in a subsequent paper.