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Elliptic non-degeneracy and spectral rigidity of classical billiards. (arXiv:2401.16510v1 [math.DS]) http://arxiv.org/abs/2401.16510
Elliptic non-degeneracy and spectral rigidity of classical billiards. (arXiv:2401.16510v1 [math.DS]) http://arxiv.org/abs/2401.16510