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Eigenvariety for partially classical Hilbert modular forms

Mladen Dimitrov and Chi-Yun Hsu

Vol. 7 (2025), No. 3-4, 589–609
Abstract

For each subset of primes in a totally real field above a rational prime p, there is the notion of partially classical Hilbert modular forms, where the empty set recovers the overconvergent forms and the full set of primes above p yields classical forms. Given such a set, we p-adically interpolate the classical modular sheaves to construct families of partially classical Hilbert modular forms with weights varying in appropriate weight spaces and construct the corresponding eigenvariety, generalizing the construction of Andreatta, Iovita, Pilloni, and Stevens.

Dedicated to the memory of Joël Bellaïche

Keywords
eigenvariety, Hilbert modular forms, partially classical, parabolic
Mathematical Subject Classification
Primary: 11F33
Milestones
Received: 6 April 2024
Revised: 4 April 2025
Accepted: 19 April 2025
Published: 12 September 2025
Authors
Mladen Dimitrov
University of Lille
CNRS, UMR 8524 — Laboratoire Paul Painlevé
Lille
France
Chi-Yun Hsu
Department of Mathematics and Computer Science
Santa Clara University
Santa Clara, CA
United States