The density conjecture for hyperbolic closed geodesic directions on dilation surfaces

Let XX be a strict dilation surface, where a strict dilation surface is a dilation surface that is not a translation surface. A closed geodesic is hyperbolic when its monodromy representation has a nontrivial dilation ratio, and its direction is its slope in the dilation-surface charts.

The density conjecture for hyperbolic closed geodesic directions. The set of directions of hyperbolic closed geodesics of XX forms a dense subset of S1\mathbb{S}^{1}.

A weak version, asserting only that directions of closed geodesics are dense in S1\mathbb{S}^{1}, has been proved by BGT; the supplied text says that this does not determine whether a significant part of these geodesics are hyperbolic. The stated conjecture remains unresolved in the supplied text.

Sources & referencesView supporting material

Primary source

Guillaume Tahar, “Horizon saddle connections and Morse-Smale dynamics of dilation surfaces”, arXiv:2107.11745 (2023).

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