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arXiv · 2602.13401

On the Brauer class of Modular Endomorphism Algebras

Enrique González-Jiménez·Eknath Ghate·Jordi Quer
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Abstract

We investigate the Brauer class of the endomorphism algebra of the motive attached to a non-CM form. The ramification of the algebra is shown in many cases to be controlled by the normalized slopes of the form.

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Enrique González-Jiménez, Eknath Ghate, Jordi Quer. 2026-02-13. On the Brauer class of Modular Endomorphism Algebras. https://doi.org/10.1155/imrn.2005.701

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