本书暂定概念：尚未进入正式概念库。下面是本书给出的定义原文。
定义 · 1.1 非相对论性粒子
我们先把狭义相对论和时空放在一边，转而关注粒子在弯曲空间中的非相对论运动。在数学上，这类空间称为流形(manifold)，而对弯曲流形的研究称为黎曼几何(Riemannian geometry)。不过，本节的大部分内容我们都不去理会任何正式的数学定义，而是把注意力集中在物理上。
英文原文
Let’s start by forgetting about special relativity and spacetime and focus instead on the non-relativistic motion of a particle in curved space. Mathematically, these spaces are known as manifolds, and the study of curved manifolds is known as Riemannian geometry. However, for much of this section we will dispense with any formal mathematical definitions and instead focus attention on the physics.
出处：1.1 非相对论性粒子 · node a-d807b3c4d0ba4f4ab8bd5d19 · 源节点 SHA-256 6f4da39972b7f94e…