Poincaré half-space model. Take the open upper half-space \[\mathbb{H}^n := \{(x_1,\dots,x_n)\in\mathbb{R}^n \mid x_n 0\}\] equipped with the Riemannian metric whose components on the coordinate tangent vectors are \[g_{ij}(p) \;=\; g_p\!\left(\frac{\partial}{\partial x_i}\bigg|_p,\; \frac{\partial}{\partial x_j}\bigg|_p\right) \;=\; \frac{1}{p_n^2}\,\delta_{ij}.\] Geodesics are semicircles (or rays) orthogonal to the boundary hyperplane \(\{x_n = 0\}\).
Зарина Дзагоева
。业内人士推荐91视频作为进阶阅读
“我们认为人才密度加AI原生的研发组织，可以使得迭代效率持续领先。”他说。
人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用
Fast connection speeds free from throttling