Periodic orbits in outer billiard

Research output: Contribution to journalArticlepeer-review


It is shown that the set of 4-period orbits in outer billiard in the Euclidean plane with piecewise smooth convex boundary has an empty interior, provided that no four corners of the boundary form a parallelogram.

Original languageEnglish (US)
Article number67089
JournalInternational Mathematics Research Notices
StatePublished - 2006

ASJC Scopus subject areas

  • Mathematics(all)


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