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20192026
most citedAutomorphisms of the k-curve graph

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math.DS2023

A challenger to elliptic billiards fails: String construction over convex polygons and the Birkhoff--Poritsky conjecture

Leonid Bunimovich, Roberta Shapiro

We prove that the billiard claimed to be a possible counterexample to the Birkhoff-Poritsky conjecture is actually not a counterexample. We also show that for a billiard in a table…