TAILIEUCHUNG - Đề tài " The classification of pcompact groups for p odd "

A p-compact group, as defined by Dwyer and Wilkerson, is a purely homotopically defined p-local analog of a compact Lie group. It has long been the hope, and later the conjecture, that these objects should have a classification similar to the classification of compact Lie groups. In this paper we finish the proof of this conjecture, for p an odd prime, proving that there is a one-to-one correspondence between connected p-compact groups and finite reflection groups over the p-adic integers. . | Annals of Mathematics The classification of p-compact groups for p odd By K. K. S. Andersen J. Grodal J. M. M0ller and A. Viruel Annals of Mathematics 167 2008 95 210 The classification of p-compact groups for p odd By K. K. S. Andersen J. Grgdal J. M. Mgller and A. ViRUEL Abstract A p-compact group as defined by Dwyer and Wilkerson is a purely homotopically defined p-local analog of a compact Lie group. It has long been the hope and later the conjecture that these objects should have a classification similar to the classification of compact Lie groups. In this paper we finish the proof of this conjecture for p an odd prime proving that there is a one-to-one correspondence between connected p-compact groups and finite reflection groups over the p-adic integers. We do this by providing the last and rather intricate piece namely that the exceptional compact Lie groups are uniquely determined as p-compact groups by their Weyl groups seen as finite reflection groups over the p-adic integers. Our approach in fact gives a largely self-contained proof of the entire classification theorem for p odd. Contents 1. Introduction Relationship to the Lie group case and the conjectural picture for p 2 Organization of the paper Notation Acknowledgements 2. Skeleton of the proof of the main Theorems and 3. Two lemmas used in Section 2 4. The map T Aut BX Aut BNX 5. Automorphisms of maximal torus normalizers 6. Reduction to connected center-free simple p-compact groups The first named author was supported by EU grant EEC HPRN-CT-1999-00119. The second named author was supported by NSF grant DMS-0104318 a Clay Liftoff Fellowship and the Institute for Advanced Study for different parts of the time this research was carried out. The fourth named author was supported by EU grant EEC HPRN-CT-1999-00119 FEDER-MEC grant MTM2007-60016 and by the JA grants FQM-213 and FQM-2863. 96 K. K. S. ANDERSEN J. GRODAL J. M. M0LLER AND A. VIRUEL 7. An integral version of a theorem of Nakajima .

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