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arXiv · 2510.04958

Ring stacks conjecturally related to the stacks $BT_n^{G,\mu}$

Vladimir Drinfeld
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Abstract

Using the ring space of sheared Witt vectors, we define certain ring stacks. We suggest several models for the ring stacks. Motivation: there is a conjectural description of the stack of n-truncated Barsotti-Tate groups and its Shimurian analogs in terms of the new ring stacks.

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Vladimir Drinfeld. 2025-10-06. Ring stacks conjecturally related to the stacks $BT_n^{G,\mu}$. https://arxiv.org/abs/2510.04958

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