JP Journal of Algebra, Number Theory and Applications

The JP Journal of Algebra, Number Theory and Applications is a prestigious international journal indexed in the Emerging Sources Citation Index (ESCI). It publishes original research papers, both theoretical and applied in nature, in various branches of algebra and number theory. The journal also welcomes survey articles that contribute to the advancement of these fields.

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ON SOME PROPERTY OF $p$-ADIC FAMILIES OF POTENTIALLY SEMI-STABLE REPRESENTATIONS

Authors

  • Atsushi Yamagami

Keywords:

potentially semi-stable representations, Weil group.

DOI:

https://doi.org/10.17654/0972555523021

Abstract

Let $p$ be an odd prime number and $\left\{\rho_k\right\}_{k \in \mathcal{K}}$ be a $p$-adic analytic family of potentially semi-stable representations $\rho_k$ with an arithmetic progression $\mathcal{K}$. Under some assumptions, we shall prove in this article that if there exists some $k \in \mathcal{K}$ such that the $W_{\mathbb{Q}_p}$ representation $D_{\mathrm{pst}}\left(\rho_k\right)$ associated to $\rho_k$ is reducible, then for any $k^{\prime} \in \mathcal{K}, D_{\mathrm{pst}}\left(\rho_{k^{\prime}}\right)$ is also reducible, where $W_{\mathbb{Q}_p}$ is the Weil group of the field $\mathbb{Q}_p$ of $p$-adic numbers.

Received: June 27, 2023
Accepted: August 1, 2023

References

S. Bosch, U. Güntzer and R. Remmert, Non-Archimedean Analysis, Grundlehren der Math. Wissenschaften 261, 1984.

K. Conrad, Exterior Powers.

https://kconrad.math.uconn.edu/blurbs/linmultialg/extmod.pdf.

J.-M. Fontaine, Le corps des périodes $p$-adiques, Exposé II, Astérisque 223 (1994), 59-101.

J.-M. Fontaine, Représentations $p$-adiques semi-stables, Exposé III, Astérisque 223 (1994), 113-184.

J.-M. Fontaine, Représentations $l$-adiques potentiellement semi-stables, Exposé VIII, Astérisque 223 (1994), 321-347.

I. Kaplansky, Elementary divisions and modules, Trans. Amer. Math. Soc. 66 (1949), 464-491.

H. Matsumura, Commutative Ring Theory, Cambridge Studies in Advanced Mathematics 8, Cambridge University Press, 1986.

Published

2023-08-28

Issue

Section

Articles

How to Cite

ON SOME PROPERTY OF $p$-ADIC FAMILIES OF POTENTIALLY SEMI-STABLE REPRESENTATIONS. (2023). JP Journal of Algebra, Number Theory and Applications, 62(1), 51-69. https://doi.org/10.17654/0972555523021

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