Openness and closedness conjecture for Θ-positive Anosov representations

Let Σ\Sigma be a closed oriented surface and let (G,PΘR)(\mathrm{G},\mathrm{P}^\mathbb{R}_\Theta) admit a Θ\Theta-positive structure. A representation ρ:π1ΣGR\rho:\pi_1\Sigma\to\mathrm{G}^\mathbb{R} is Θ\Theta-positive Anosov when it is PΘR\mathrm{P}^\mathbb{R}_\Theta-Anosov and its Anosov boundary curve sends positively ordered triples in π1Σ\partial_\infty\pi_1\Sigma to positive triples in GR/PΘR\mathrm{G}^\mathbb{R}/\mathrm{P}^\mathbb{R}_\Theta. Openness and closedness conjecture. The set of Θ\Theta-positive Anosov representations is an open and closed subset of X(Σ,GR){\mathcal X}(\Sigma,\mathrm{G}^\mathbb{R}). This asserts that positivity defines a union of connected components of the character variety, a foundational property for the higher Teichmüller spaces considered in the paper. The source provides no resolution evidence, so the conjecture is recorded as open.

Sources & referencesView supporting material

Primary source

Steve Bradlow, Brian Collier, Oscar Garcia-Prada, Peter Gothen and André Oliveira, “A general Cayley correspondence and higher Teichmüller spaces”, arXiv:2101.09377 (2024).

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