In this paper we consider a class of degenerate reversible systems with Bruno non-degeneracy conditions, and prove the persistence of a lower dimensional invariant torus, whose frequency vector is only a small dilation of the prescribed one.

中文翻译：

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具有布鲁诺非简并性条件的可逆系统中简并性低维不变环的持续性

在本文中，我们考虑了一类具有Bruno非简并条件的简并可逆系统，并证明了其维数不变的低维不变环的持续性。