# Erratum to: On Some Invariants of Birkhoff Billiards Under Conjugacy

@article{Koudjinan2021ErratumTO,
title={Erratum to: On Some Invariants of Birkhoff Billiards Under Conjugacy},
author={C E Koudjinan and Vadim Kaloshin},
journal={Regular and Chaotic Dynamics},
year={2021},
volume={27},
pages={757}
}
• Published 30 May 2021
• Materials Science
• Regular and Chaotic Dynamics
In the class of strictly convex smooth boundaries each of which has no strip around its boundary foliated by invariant curves, we prove that the Taylor coefficients of the “normalized” Mather’s \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\beta$$\end{document}-function are invariant under \documentclass[12pt…
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