在双曲空间中引入双曲线的概念,讨论其方程与图像.考察双曲线的一些几何性质,诸如对称性、测地曲率、凸性、运动等.
The concept of hyperbola is extended to hyperbolic space, with both the equation and figures discussed. Some geometric data of hyperbola are considered, such as symmetry, geodesic curvature, convexity and motion.