We answer the question whether a billiard system is a new integrable system or not. This question is posed by H. J. Korsch, H.-J. Jodl, and T. Hartmann in [1],[2]. The answer is NO, that is, the billiard system is nothing but an elliptic billiard system, which is well-known to be integrable.
雑誌名
山形大学紀要. 自然科学 = Bulletin of Yamagata University. Natural Science
あるビリヤード力学系の積分可能性について
kiyoun-17-2-041to044.pdf
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