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Complex and p-adic Hecke Algebra with Applications to SL(2)

We discuss two versions of the Hecke algebra of a locally profinite group G, one that is complex valued and one that is p-adic valued. We reproduce several results which are well known for the complex valued Hecke algebra for the p-adic valued Hecke algebra. Specifically we show the equivalence of smooth representations of G and smooth modules of the Hecke algebra of G. We specialize to the group G=GLn(F) for F an extension of Qp, and show that the spherical Hecke algebra of G is finitely generated, and exhibit its generators. This is a standard fact for the complex valued Hecke algebra that we reproduce for the p-adic valued case. We then show that the spherical Hecke algebra of SLnF is isomorphic to a subalgebra of the spherical Hecke algebra of GLnF. Then a character of the spherical Hecke algebra ofGLn(F) can also be viewed as a character of the spherical Hecke algebra of SLn(F). Therefore such a character has two induced modules, one for the Hecke algebra of GLn(F) and another for the Hecke algebra of SLn(F). Theorem 3.4.3 and corollary 3.4.4give a condition under which the coinduced and induced modules of such a character areisomorphic as vector spaces.

Identiferoai:union.ndltd.org:siu.edu/oai:opensiuc.lib.siu.edu:theses-3768
Date01 September 2020
CreatorsRoberts, Jeremiah
PublisherOpenSIUC
Source SetsSouthern Illinois University Carbondale
Detected LanguageEnglish
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SourceTheses

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