We establish that for every hyperbolic orbifold of type (2,q,∞) and for every orbifold of type (2,3,4g + 2), the geodesic flow on the unit tangent bundle is left handed. This implies that the link formed by every collection of periodic orbits (i) bounds a Birkhoff section for the geodesic flow, and (ii) is a fibered link. We also prove similar results for the torus with any flat metric. We also observe that the natural extension of the conjecture to arbitrary hyperbolic surfaces (with non-trivial homology) is false.
Keywords: geodesic, knot, template, linking number, left handed flow
Dehornoy, Pierre  1
@article{10_2140_agt_2015_15_1525,
author = {Dehornoy, Pierre},
title = {Geodesic flow, left-handedness and templates},
journal = {Algebraic and Geometric Topology},
pages = {1525--1597},
year = {2015},
volume = {15},
number = {3},
doi = {10.2140/agt.2015.15.1525},
url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2015.15.1525/}
}
Dehornoy, Pierre. Geodesic flow, left-handedness and templates. Algebraic and Geometric Topology, Tome 15 (2015) no. 3, pp. 1525-1597. doi: 10.2140/agt.2015.15.1525
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