Degenerations of k-positive surface group representations

We introduce \emph{k-positive representations}, a large class of $\{1,\ldots,k\}$--Anosov surface group representations into PGL(E) that share many features with Hitchin representations, and we study their degenerations: unless they are Hitchin, they can be deformed to non-discrete representations,...

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Bibliographic Details
Main Authors: Beyrer, Jonas (Author) , Pozzetti, Maria Beatrice (Author)
Format: Article (Journal) Chapter/Article
Language:English
Published: 10 Jun 2021
In: Arxiv
Year: 2021, Pages: 1-39
DOI:10.48550/arXiv.2106.05983
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.48550/arXiv.2106.05983
Verlag, lizenzpflichtig, Volltext: http://arxiv.org/abs/2106.05983
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Author Notes:Jonas Beyrer and Beatrice Pozzetti
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Summary:We introduce \emph{k-positive representations}, a large class of $\{1,\ldots,k\}$--Anosov surface group representations into PGL(E) that share many features with Hitchin representations, and we study their degenerations: unless they are Hitchin, they can be deformed to non-discrete representations, but any limit is at least (k-3)-positive and irreducible limits are (k-1)-positive. A major ingredient, of independent interest, is a general limit theorem for positively ratioed representations.
Item Description:Gesehen am 23.09.2022
Physical Description:Online Resource
DOI:10.48550/arXiv.2106.05983