2002 / June Volume 26 No.2

Published Date	2002 / June
Author	王九逵
Keyword	射影幾何, 射影平面, 非歐幾何, Riemann, 球面三角形, 橢圓型的非歐幾何, 球面幾何, 球面三角學, 雙曲幾何
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Mathmedia