Refinements of the trace formula for GL(2)
Representation Theory
2019-10-10 v1
Abstract
We express the discrete noncuspidal terms in the spectral side of the trace formula for GL(2) in terms of orbital integrals, obtaining a geometric expansion for the cuspidal part of the trace formula. Assuming the Ramanujan conjecture for GL(2), this is equal to the tempered part of the trace formula, providing an alternate approach to the method of Frenkel-Langlands-Ngo in the context of Beyond Endoscopy. Using this, we establish a formula which in principle leads to an -trace formula, and conclude with some remarks regarding the primitivization of the trace formula.
Cite
@article{arxiv.1910.03733,
title = {Refinements of the trace formula for GL(2)},
author = {Tian An Wong},
journal= {arXiv preprint arXiv:1910.03733},
year = {2019}
}
Comments
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