两个抛物映射生成的自由群
Free groups generated by two parabolic maps
摘要：
本文考虑由${\rm SU}(2,1)$中两个具有不同不动点的幂幺抛物元生成的群。我们给出了几个条件，保证该集团是离散的和自由的。我们还给出了Heisenberg群中有限${\mathbb R}$ -圆的直径的一个结果。
英文摘要：
In this paper we consider a group generated by two unipotent parabolic elements of ${\rm SU}(2,1)$ with distinct fixed points. We give several conditions that guarantee the group is discrete and free. We also give a result on the diameter of a finite ${\mathbb R}$-circle in the Heisenberg group.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
