反而言之，笛卡爾將代數幾何化，一元函數變成曲線，三元函數看成三度空間，四元函數可以看成四度空間

來源: fourwaves 於 2016-06-10 07:38:21 [舊帖] [給我悄悄話] 本文已被閱讀：次

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