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Poincaré series and linking of Legendrian knots

Abstract : On a negatively curved surface, we show that the Poincaré series counting geodesic arcs orthogonal to some pair of closed geodesic curves has a meromorphic continuation to the whole complex plane. When both curves are homologically trivial, we prove that the Poincaré series has an explicit rational value at 0 interpreting it in terms of linking number of Legendrian knots. In particular, for any pair of points on the surface, the lengths of all geodesic arcs connecting the two points determine its genus.
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https://hal.archives-ouvertes.fr/hal-02625537
Contributor : Gabriel Rivière <>
Submitted on : Tuesday, May 26, 2020 - 2:51:21 PM
Last modification on : Wednesday, July 8, 2020 - 12:44:00 PM

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  • HAL Id : hal-02625537, version 1
  • ARXIV : 2005.13235

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Nguyen Viet Dang, Gabriel Rivière. Poincaré series and linking of Legendrian knots. 2020. ⟨hal-02625537v1⟩

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