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arXiv · 1805.08049

Greenberg algebras and ramified Witt vectors

Alessandra Bertapelle·Maurizio Candilera
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Abstract

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.

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Alessandra Bertapelle, Maurizio Candilera. 2018-05-21. Greenberg algebras and ramified Witt vectors. https://arxiv.org/abs/1805.08049

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