爱因斯坦数学差吗？告诉你什么是罗氏几何和黎曼几何

欧氏几何: 第5公理 : 直线上过一点, 只有 n=1 条平行线

非欧几何:

  1. 罗氏: n >1 (空间)
  2. 黎曼: n = 0 (球体)

Author: tomcircle

Math amateur

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