Maximal representations of complex hyperbolic lattices into SU(m,n)

Let Γ denote a lattice in SU(1, p), with p greater than 1. We show that there exists no Zariski dense maximal representation with target SU(m, n) if n > m > 1. The proof is geometric and is based on the study of the rigidity properties of the geometry whose points are isotropic m-subspaces of...

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1. Verfasser: Pozzetti, Maria Beatrice (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 14 July 2015
In: Geometric and functional analysis
Year: 2015, Jahrgang: 25, Heft: 4, Pages: 1290-1332
ISSN:1420-8970
DOI:10.1007/s00039-015-0338-3
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1007/s00039-015-0338-3
Verlag, Volltext: https://link.springer.com/article/10.1007/s00039-015-0338-3
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Verfasserangaben:Maria Beatrice Pozzetti
Beschreibung
Zusammenfassung:Let Γ denote a lattice in SU(1, p), with p greater than 1. We show that there exists no Zariski dense maximal representation with target SU(m, n) if n > m > 1. The proof is geometric and is based on the study of the rigidity properties of the geometry whose points are isotropic m-subspaces of a complex vector space V endowed with a Hermitian metric h of signature (m, n) and whose lines correspond to the 2m dimensional subspaces of V on which the restriction of h has signature (m, m).
Beschreibung:Gesehen am 02.03.2017
Beschreibung:Online Resource
ISSN:1420-8970
DOI:10.1007/s00039-015-0338-3