http://www.tastphysics.com/bg5_2.htm
廣義相對論把非慣性時空定義為黎曼空間,但由于黎曼幾何是正曲率空間,既然廣義時空是對稱的,我們必然要問,負曲率空間到哪去了
http://www.tastphysics.com/bg5_2.htm
廣義相對論把非慣性時空定義為黎曼空間,但由于黎曼幾何是正曲率空間,既然廣義時空是對稱的,我們必然要問,負曲率空間到哪去了
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