Shadows of Teichmüller Discs in the Curve Graph
International Mathematics Research Notices
Oxford University Press
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Tang, R., & Webb, R. (2017). Shadows of Teichmüller Discs in the Curve Graph. International Mathematics Research Notices https://doi.org/10.1093/imrn/rnw318
We consider several natural sets of curves associated to a given Teichmüller disc, such as the systole set or cylinder set, and study their coarse geometry inside the curve graph. We prove that these sets are quasiconvex and agree up to uniformly bounded Hausdorff distance. We describe two operations on curves and show that they approximate nearest point projections to their respective targets. Our techniques can be used to prove a bounded geodesic image theorem for a natural map from the curve graph to the filling multi-arc graph associated to a Teichmüller disc.
This work was supported by the Engineering and Physical Sciences Research Council fellowship number (EP/N019644/1 to R.C.H.W.).
External DOI: https://doi.org/10.1093/imrn/rnw318
This record's URL: https://www.repository.cam.ac.uk/handle/1810/262684