English

Crystalline representations and $p$-adic Hodge theory for non-commutative algebraic varieties

Algebraic Geometry 2025-12-12 v3 K-Theory and Homology

Abstract

Let T\mathcal{T} be an OK\mathcal{O}_K-linear idempotent-complete, small smooth proper stable \infty-category, where KK is a finite extension of Qp\mathbb{Q}_p. We give a Breuil-Kisin module structure on the topological negative cyclic homology πiTC(T/S[z];Zp)\pi_i{\rm TC}^-(\mathcal{T}/\mathbb{S}[z];\mathbb{Z}_p), and prove a KK-theory version of Bhatt-Morrow-Scholze's comparison theorems. Moreover, using Gao's Breuil-Kisin GKG_K-module theory and Du-Liu's (φ,G^)(\varphi,\hat{G})-module theory, we prove the Zp[GK]\mathbb{Z}_p[G_K]-module TAinf(πiTC(T/S[z];Zp))T_{A_{\rm inf}}(\pi_i{\rm TC}^-(\mathcal{T}/\mathbb{S}[z];\mathbb{Z}_p)^{\vee}) is a Zp\mathbb{Z}_p-lattice of a crystalline representation. As a corollary, if the generic fibre of T\mathcal{T} admits a geometric realization in the sense of Orlov, we prove a comparison theorem between K(1)K(1)-local KK theory of the generic fibre and topological cyclic periodic homology theory of the special fibre with BcrysB_{\rm crys}-coefficients, in particular, we prove the pp-adic representation of the K(1)K(1)-local KK-theory of the generic fibre is a crystalline representation, this can be regarded as a non-commutative analogue of pp-adic Hodge theory for smooth proper varieties proved by Tsuji and Faltings. This is the full version of arXiv:2305.00292, containing additional details and results.

Keywords

Cite

@article{arxiv.2309.13654,
  title  = {Crystalline representations and $p$-adic Hodge theory for non-commutative algebraic varieties},
  author = {Keiho Matsumoto},
  journal= {arXiv preprint arXiv:2309.13654},
  year   = {2025}
}

Comments

This is the full version of arXiv:2305.00292, containing additional details and results. To appear in the Journal of Noncommutative Geometry