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arXiv 1105.0846math.NT
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不完全剩余域情形下的晶体和半稳定表示

Crystalline and semi-stable representations in the imperfect residue field case

Kazuma Morita

摘要:

设K是具有剩余域k的p-adic局部域,使得[k:k^p]=p^e< \infty,并且V是Gal(\bar{K} /K)的p-adic表示。然后,利用p-adic微分模的理论,证明了V是一个潜在的结晶(分别为:潜在的半稳定的)表示Gal(\bar{K} /K)当且仅当V是潜在的晶体(分别为潜在半稳定)表示,其中K^{pf}/K是某个p-adic局部域,其剩余域是包含k的最小完满域k^{pf}。作为应用,我们证明了Fontaine在不完全剩余域情形下的p-adic单值定理.

英文摘要:

Let K be a p-adic local field with residue field k such that [k:k^p]=p^e<\infty and V be a p-adic representation of Gal(\bar{K}/K). Then, by using the theory of p-adic differential modules, we show that V is a potentially crystalline (resp. potentially semi-stable) representation of Gal(\bar{K}/K) if and only if V is a potentially crystalline (resp. potentially semi-stable) representation of Gal(\bar{K^{pf}}/K^{pf}) where K^{pf}/K is a certain p-adic local field whose residue field is the smallest perfect field k^{pf} containing k. As an application, we prove the p-adic monodromy theorem of Fontaine in the imperfect residue field case.

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