A connected Lie group admitting an expansive automorphism is known to be nilpotent, but all nilpotent Lie groups do not admit expansive automorphism. In this article, we find sufficient conditions for a class of nilpotent Lie groups to admit expansive automorphism.

中文翻译：

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幂零李群和双曲自同构

一个连通李群承认扩张自同构被称为幂零，但所有幂零李群不承认扩张自同构。在本文中，我们找到了一类幂零李群允许膨胀自同构的充分条件。