ON SOME PROPERTY OF $p$-ADIC FAMILIES OF POTENTIALLY SEMI-STABLE REPRESENTATIONS
Keywords:
potentially semi-stable representations, Weil group.DOI:
https://doi.org/10.17654/0972555523021Abstract
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
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