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Existence of closed geodesics through a regular point on translation surfaces

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We show that on any translation surface, if a regular point is contained in some simple closed geodesic, then it is contained in infinitely many simple closed geodesics, whose directions… Click to show full abstract

We show that on any translation surface, if a regular point is contained in some simple closed geodesic, then it is contained in infinitely many simple closed geodesics, whose directions are dense in $${\mathbb {RP}}^1$$ RP 1 . Moreover, the set of points that are not contained in any simple closed geodesic is finite. We also construct explicit examples showing that such points exist on some translation surfaces. For a surface in any hyperelliptic component, we show that this finite exceptional set is actually empty. The proofs of our results use Apisa’s classifications of periodic points and of $$\text {GL}(2,{\mathbb {R}})$$ GL ( 2 , R ) orbit closures in hyperelliptic components, as well as a recent result of Eskin–Filip–Wright.

Keywords: closed geodesics; simple closed; translation; translation surfaces; regular point

Journal Title: Mathematische Annalen
Year Published: 2019

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