Abstract.
We show that the outer billiard around a semicircle has an open ball escaping to infinity.
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Communicated by Domokos Szasz.
Submitted: April 19, 2008.; Accepted: January 11, 2009.
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Dolgopyat, D., Fayad, B. Unbounded Orbits for Semicircular Outer Billiard. Ann. Henri Poincaré 10, 357–375 (2009). https://doi.org/10.1007/s00023-009-0409-9
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DOI: https://doi.org/10.1007/s00023-009-0409-9