Inhomogeneous Diophantine Approximation and Angular Recurrence for Polygonal Billiards
Joerg Schmeling, Serge Troubetzkoy
Abstract
For a given rotation number we compute the Hausdorff dimension of the set of well approximable numbers. We use this result and an inhomogeneous version of Jarnik's theorem to show strong recurrence properties of the billiard flow in certain polygons
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