论文标题
双曲几何形状
Hyperbolic geometry
论文作者
论文摘要
这本教科书是一门关于双曲线几何学的入门课程，适用于高级本科生（单身汉）或早期研究生（硕士）级别的学生。
This textbook is an introductory course on hyperbolic geometry, intended for students at the advanced undergraduate (Bachelor) or early graduate (Master) level.
