Search arXiv⌕ Search
Home/Archive/arXiv

arXiv · 0709.4523

A note on lattices in semi-stable representations

Tong Liu
View original source ↗Read source document ↗Export metadata ↓

Abstract

Let p>2 be a prime, K a finite extension over Q_p and G :=Gal(\bar K/K). We extend Kisin's theory on ϕ-modules of finite E(u)-height to give a new classification of G-stable Z_p-lattices in semi-stable representations

Explore related subjects

math.NTmath.AG

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Tong Liu. 2007-09-28. A note on lattices in semi-stable representations. https://arxiv.org/abs/0709.4523

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

arXiv2026

On group rings of the simple group of order 168, 504 or 360 and their modules

Let $p$ be a prime and $\mathbb{Z}_p$ the ring of $p$-adic integers. Let $G$ denote the simple group of order 168, 504 or 360. In this paper, we study the structure of the $χ$-part of a $\mathbb{Z}_p[\mathrm{Im}(χ)][G]$-module come from ideal class groups, Artin $L$-functions and Iwasawa theory. After this manuscript was posted, it was pointed out to the author that the main theorem holds for an arbitrary finite group and follows directly from the structure theorem for group rings; see the note added after Theorem 1.1.

math.NT↗
arXiv2026

The $ρ$-Fourier transform

Let $G$ be a reductive group over a local field $F$ and let $ρ:{}^LG \to \mathrm{GL}_{V_ρ}(\mathbb{C})$ be a representation of its $L$-group satisfying suitable assumptions. Braverman, Kazhdan and Ngô conjectured that one has a $ρ$-Fourier transform satisfying certain desiderata. We give a uniform construction of the Fourier transform for arbitrary local fields. This complements work of L.~Lafforgue in the non-Archimedean case, and proves a portion of the conjectures of Braverman, Kazhdan and Ngô. Our methods are spectral in nature.

math.NT↗
arXiv2026

The Hasse principle for diagonal forms restricted to a hypersurface of adjacent degree

We investigate the Hasse principle for Diophantine systems consisting of one diagonal form of degree $k$ and one general form of degree $k-1$. By refining the method of Brandes and Parsell (arXiv:2003.04350) in this specific setting, we improve the bound $n > 2^k k$ to $n > 2^{k-1}(2k-1)$; in particular, the requirement $n > 24$ in the case of degrees three and two is relaxed to $n > 20$.

math.NT↗