1992 / June Volume 16 No.2
| Published Date |
1992 / June
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| Author | |
| Keyword |
Hermann Weyl, 對稱, 鋪磚(tiling), 球面三角形, 正多面體, 對稱群, 四元數, 同倫群, Poincaré球, 同調群, Stephan Smale, Michael Freedman, William Thurston, 非正曲流形
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