Stereographic Projection & mobius transformation

Stereographic Projection & mobius transformation。 If you want to understand Einstein's theory of relativity, you must understand mobius transformation. To understand mobius transformation, you must first understand Riemann sphere, complex numbers, geometric inversion.

stereographic projection by Henry Segerman 2013-12-12
stereographic projection by Henry Segerman

赤平投影和莫比乌斯变换。如果你想了解爱因斯坦的理论,你必须明白莫比乌斯转型。要了解莫比乌斯变换,必须先了解黎曼球,复数,几何反转。

see http://xahlee.info/math/stereographic_projection_physical_model.html

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