Mathematics > Algebraic Geometry
[Submitted on 21 May 2018 (v1), last revised 3 Mar 2020 (this version, v2)]
Title:Greenberg algebras and ramified Witt vectors
View PDFAbstract:Let O be a complete discrete valuation ring of mixed characteristic and with finite residue field k. We study a natural morphism between the Greenberg algebra of O and the special fiber of the scheme of ramified Witt vectors over O. It is a universal homeomorphism with pro-infinitesimal kernel that can be explicitly described in some cases.
Submission history
From: Alessandra Bertapelle [view email][v1] Mon, 21 May 2018 13:42:23 UTC (16 KB)
[v2] Tue, 3 Mar 2020 11:58:53 UTC (18 KB)
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