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Proper affine deformations of positive representations

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arxiv 2405.14658 v1 pith:5VSXN27O submitted 2024-05-23 math.DG math.GT

classification math.DGmath.GT
keywords affinemathbbactionspositiveproperanosovboundedcocycles
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abstract

We define for every positive Anosov representation of a nonabelian free group into $\mathrm{SO}(2n,2n-1)$ a family of $\mathbb{R}^{4n-1}$-valued cocycles which induce proper affine actions on $\mathbb{R}^{4n-1}$. We construct fundamental domains in $\mathbb{R}^{4n-1}$ bounded by generalized crooked planes for these affine actions, and deduce that the quotient manifolds are homeomorphic to handlebodies.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Bending, entropy and proper affine actions of surface groups

    math.GT 2026-02 conditional novelty 7.0 of 10

    Every non-Fuchsian quasifuchsian surface group in an explicit open neighborhood of the Fuchsian locus admits a proper affine action on sl(2,C) with adjoint linear part, and all entropy critical points in a larger neig...

  2. Affine Anosov representations

    math.DS 2024-12 conditional novelty 2.0 of 10

    This paper is a survey of affine Anosov representations, a framework in which proper affine actions of hyperbolic groups are characterized by Margulis invariant spectra, mostly quoting the author's own results.

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