Prisms and Tambara functors I: Twisted powers, transversality, and the perfect sandwich
Number Theory
2023-09-12 v2 Algebraic Topology
Abstract
We construct a faithful and conservative functor from prisms to -Tambara functors; in appropriate situations, this gives an algebraic description of . We also present two integral variants using the generalized -series of Devalapurkar-Misterka. The construction is based on the "twisted -adic" or "" filtration, and is closely related to -divided powers. To verify the axioms, we introduce a new technique for constructing Tambara functors, inspired by transversal prisms. We apply this to give a conceptual construction of Molokov's de Rham-Witt comparison map, and generalize it to a triangle sandwiching prismatic theory between theories built from Witt vectors and adjunction of -power roots.
Keywords
Cite
@article{arxiv.2309.03181,
title = {Prisms and Tambara functors I: Twisted powers, transversality, and the perfect sandwich},
author = {Yuri J. F. Sulyma},
journal= {arXiv preprint arXiv:2309.03181},
year = {2023}
}
Comments
32 pages; v2: fix typos and add/expand some remarks