Dan Reznik’s identities and more

Misha Bialy, Serge Tabachnikov

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


Dan Reznik found, by computer experimentation, a number of conserved quantities associated with periodic billiard trajectories in ellipses. We prove some of his observations using a non-standard generating function for the billiard ball map. In this way, we also obtain some identities valid for all smooth convex billiard tables.

Original languageEnglish (US)
Pages (from-to)1341-1354
Number of pages14
JournalEuropean Journal of Mathematics
Issue number4
StatePublished - Dec 2022

All Science Journal Classification (ASJC) codes

  • General Mathematics


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