English

A note on mod-$p$ local-global compatibility via Scholze's functor

Number Theory 2021-11-23 v1 Representation Theory

Abstract

We remove the semisimple condition in the mod-pp local-global compatibility result of arXiv:2106.10674. Namely, assuming flatness of πm\pi_{\mathfrak{m}}^\vee and σmGalFp+\overline{\sigma}_{\mathfrak{m}}|_{\mathrm{Gal}_{F^+_{\mathfrak{p}}}} being multiplicity free, we prove that Heˊtn1(PCpn1,Fπm[m])H^{n-1}_{\text{\'et}}(\mathbb{P}_{\mathbb{C}_p}^{n-1}, \mathcal{F}_{\pi_{\mathfrak{m}}[\mathfrak{m}]}) determines σmGalFp+\overline{\sigma}_{\mathfrak{m}}|_{\mathrm{Gal}_{F^+_{\mathfrak{p}}}} uniquely. We give remarks on our assumptions at the end of this note.

Cite

@article{arxiv.2111.11137,
  title  = {A note on mod-$p$ local-global compatibility via Scholze's functor},
  author = {Kegang Liu and Zicheng Qian},
  journal= {arXiv preprint arXiv:2111.11137},
  year   = {2021}
}

Comments

8 pages, comments welcome

R2 v1 2026-06-24T07:47:09.372Z