Journal title
International Mathematics Research Notices
DOI
10.1093/imrn/rnw241
Issue
2
Volume
2018
Last updated
2024-02-07T12:02:17.153+00:00
Page
571-587
Abstract
We show that if {pl} is a compatible system of absolutely irreducible Galois representations of a number field then the residual representation p is absolutely irreducible for l in a density 1 set of primes. The key technical result is the following theorem: the image of pl is an open subgroup of a hyperspecial maximal compact subgroup of its Zariski closure with bounded index (as l varies). This result combines a theorem of Larsen on the semi-simple part of the image with an analogous result for the central torus that was recently proved by Barnet-Lamb, Gee, Geraghty, and Taylor, and for which we give a new proof.
Symplectic ID
665998
Submitted to ORA
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Publication type
Journal Article
Publication date
24 Dec 2016