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Jacquet-Zagier treatment of the beyond endoscopy trace formula for GL2
Abstract
We begin the study of the beyond endoscopic trace formula for GL2 over ℚ attached to any symmetric power representation σk of the dual group GL2(ℂ). For an adelic function that incorporates the L-functions L(sB,π,σk) through the basic functions at all the finite places, we integrate the cuspidal kernel against a corresponding Eisenstein series E(g,s) and realize the trace formula as a residue at s=1, replacing Arthur's truncation operation by a continuously deformed trace formula. We argue Poisson summation on the trace variable of the Hitchin-Steinberg base and show that the dominant term of the elliptic part admits meromorphic continuation to R(sB) ≥ 0 with a pole of order k at sB =1.
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BibTeX
@misc{warade2026jacquetzagier,
title = {{Jacquet-Zagier treatment of the beyond endoscopy trace formula for $\mathrmGL_2$}},
author = {Pranjal Pandurang Warade},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.01990},
eprint = {2609.01990},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.01990},
}
RIS
TY - UNPB
TI - Jacquet-Zagier treatment of the beyond endoscopy trace formula for GL_2
AU - Pranjal Pandurang Warade
PY - 2026
DA - 2026/09/02
PB - arXiv
DO - 10.48550/arxiv.2609.01990
UR - https://arxiv.org/abs/2609.01990
AB - We begin the study of the beyond endoscopic trace formula for GL_2 over ℚ attached to any symmetric power representation σ_k of the dual group GL_2(ℂ). For an adelic function that incorporates the L-functions L(s_B,π,σ_k) through the basic functions at all the finite places, we integrate the cuspidal kernel against a corresponding Eisenstein series E(g,s) and realize the trace formula as a residue at s=1, replacing Arthur's truncation operation by a continuously deformed trace formula. We argue Poisson summation on the trace variable of the Hitchin-Steinberg base and show that the dominant term of the elliptic part admits meromorphic continuation to R(s_B) ≥ 0 with a pole of order k at s_B =1.
ER -