On semisimple l-modular Bernstein-blocks of a p-adic general linear group

Let Gn=GLn(F), where F is a non-archimedean local field with residue characteristic p. Our starting point is the Bernstein decomposition of the representation category of Gn over an algebraically closed field of positive characteristic ℓ≠p into blocks. In level zero, we associate to each block a re...

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1. Verfasser: Guiraud, David-Alexandre (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 14 June 2013
In: Journal of number theory
Year: 2013, Jahrgang: 133, Heft: 10, Pages: 3524-3548
ISSN:1096-1658
DOI:10.1016/j.jnt.2013.04.012
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1016/j.jnt.2013.04.012
Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0022314X13001327
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Verfasserangaben:David-Alexandre Guiraud
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Zusammenfassung:Let Gn=GLn(F), where F is a non-archimedean local field with residue characteristic p. Our starting point is the Bernstein decomposition of the representation category of Gn over an algebraically closed field of positive characteristic ℓ≠p into blocks. In level zero, we associate to each block a replacement for the Iwahori-Hecke algebra which provides a Morita equivalence as in the complex case. Additionally, we explain how this gives rise to a description of an arbitrary Gn-block in terms of simple Gm-blocks (for m⩽n), parallelling the approach of Bushnell and Kutzko in the complex setting.
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Beschreibung:Online Resource
ISSN:1096-1658
DOI:10.1016/j.jnt.2013.04.012