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arXiv · 1506.08050

On the universal mod $p$ supersingular quotients for $\mathrm {GL}_2(F)$ over $\overline{\mathbb F}_p$ for a general $F/\mathbb{Q}_p$

Yotam I. Hendel
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Abstract

Let $F/\mathbb{Q}_p$ be a finite extension. We explore the universal supersingular mod $p$ representations of $\mathrm{GL}_2(F)$ through computing a basis of their invariant space under the pro-$p$ Iwahori subgroup. This generalizes works of Breuil and Schein from $\mathbb{Q}_p$ and the totally ramified cases to the arbitrary one. Using these results we then construct for an unramified $F/\mathbb{Q}_p$ a quotient of the universal supersingular module which has as quotients all the supersingular representations of $\mathrm{GL}_2(F)$ with a $\mathrm{GL}_2(\mathcal{O}_F)$-socle that is expected to appear in the mod $p$ local Langlands correspondence. A construction for the case of an extension of $\mathbb{Q}_p$ with inertia degree 2 and suitable ramification index is also presented.

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BibTeXRIS

Yotam I. Hendel. 2018-06-30. On the universal mod $p$ supersingular quotients for $\mathrm {GL}_2(F)$ over $\overline{\mathbb F}_p$ for a general $F/\mathbb{Q}_p$. https://doi.org/10.1016/j.jalgebra.2018.10.021

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