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arXiv · 1312.3611

A nonabelian trace formula

Jayce R. Getz·P. Edward Herman
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Abstract

Let $E/F$ be an extension of number fields with $\mathrm{Gal}(E/F)$ simple and nonabelian. In [G] the first named author suggested an approach to nonsolvable base change and descent of automorphic representations of $\mathrm{GL}_2$ along such an extension. Motivated by this we prove a trace formula whose spectral side is a weighted sum over cuspidal automorphic representations of $\mathrm{GL}_2(\mathbb{A}_E)$ that are isomorphic to their $\mathrm{Gal}(E/F)$-conjugates.

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Jayce R. Getz, P. Edward Herman. 2014-06-17. A nonabelian trace formula. https://arxiv.org/abs/1312.3611

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