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Main Authors: Mironov, Andrey E., Yin, Siyao
Format: Preprint
Published: 2026
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Online Access:https://arxiv.org/abs/2603.28347
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author Mironov, Andrey E.
Yin, Siyao
author_facet Mironov, Andrey E.
Yin, Siyao
contents In this paper, we continue to study billiards inside cones $K\subset \mathbb{R}^n$ over strictly convex closed $C^3$ manifolds with non-degenerate second fundamental form. Recently we proved that the billiard is superintegrable, i.e., the billiard admits first integrals whose values uniquely determine all billiard trajectories. In this paper we prove that this billiard system admits $n-1$ independent first integrals in involution. Consequently, the system is completely integrable as a discrete-time Hamiltonian system. This provides an example of an integrable billiard where the billiard table is neither a quadric nor consists of pieces of quadrics.
format Preprint
id arxiv_https___arxiv_org_abs_2603_28347
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Integrability of Billiards Inside Cones as a Discrete-Time Hamiltonian System
Mironov, Andrey E.
Yin, Siyao
Dynamical Systems
In this paper, we continue to study billiards inside cones $K\subset \mathbb{R}^n$ over strictly convex closed $C^3$ manifolds with non-degenerate second fundamental form. Recently we proved that the billiard is superintegrable, i.e., the billiard admits first integrals whose values uniquely determine all billiard trajectories. In this paper we prove that this billiard system admits $n-1$ independent first integrals in involution. Consequently, the system is completely integrable as a discrete-time Hamiltonian system. This provides an example of an integrable billiard where the billiard table is neither a quadric nor consists of pieces of quadrics.
title Integrability of Billiards Inside Cones as a Discrete-Time Hamiltonian System
topic Dynamical Systems
url https://arxiv.org/abs/2603.28347