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Residual Irreducibility of Compatible Systems.
- Source :
-
IMRN: International Mathematics Research Notices . Jan2018, Vol. 2018 Issue 2, p571-587. 17p. - Publication Year :
- 2018
-
Abstract
- We show that if {ρℓ} is a compatible system of absolutely irreducible Galois representations of a number field then the residual representation ¯ρℓ is absolutely irreducible for ℓ in a density 1 set of primes. The key technical result is the following theorem: the image of ρℓ 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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10737928
- Volume :
- 2018
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- IMRN: International Mathematics Research Notices
- Publication Type :
- Academic Journal
- Accession number :
- 127586310
- Full Text :
- https://doi.org/10.1093/imrn/rnw241