closed sphere 中文意思是什麼
closed sphere
解釋
閉球-
The closed universe is similar to the surface of a sphere, the size is finite but there is no boundary
封閉宇宙就好像球體的表面,大小有限但無邊。 -
In the third second, we study a closed oriented submanifold with parallel mean curvature vector field in a sphere. let s = s - nh2. we fist obtain a pinching theorem on 5
第三節中研究了歐氏球面中具有常平均曲率向量子流形,獲得兩個結果,其中一個結果推廣了h
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