{ "id": "math/0005066", "version": "v1", "published": "2000-05-07T10:03:00.000Z", "updated": "2000-05-07T10:03:00.000Z", "title": "Banach space representations and Iwasawa theory", "authors": [ "Peter Schneider", "Jeremy Teitelbaum" ], "categories": [ "math.NT", "math.RT" ], "abstract": "The lack of a $p$-adic Haar measure causes many methods of traditional representation theory to break down when applied to continuous representations of a compact $p$-adic Lie group $G$ in Banach spaces over a given $p$-adic field $K$. For example, Diarra showed that the abelian group $G=\\dZ$ has an enormous wealth of infinite dimensional, topologically irreducible Banach space representations. We therefore address the problem of finding an additional ''finiteness'' condition on such representations that will lead to a reasonable theory. We introduce such a condition that we call ''admissibility''. We show that the category of all admissible $G$-representations is reasonable -- in fact, it is abelian and of a purely algebraic nature -- by showing that it is anti-equivalent to the category of all finitely generated modules over a certain kind of completed group ring $K[[G]]$. As an application of our methods we determine the topological irreducibility as well as the intertwining maps for representations of $GL_2(\\dZ)$ obtained by induction of a continuous character from the subgroup of lower triangular matrices.", "revisions": [ { "version": "v1", "updated": "2000-05-07T10:03:00.000Z" } ], "analyses": { "subjects": [ "11S80", "11R23", "22E35" ], "keywords": [ "iwasawa theory", "adic haar measure", "traditional representation theory", "adic lie group", "topologically irreducible banach space representations" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2000math......5066S" } } }