单位球面 meaning in Chinese

unit sphere

On isometries between unit spheres of abstract m spaces
空间的单位球面之间的等距
On linear extension of isometries between the unit spheres
单位球面间等距映射的线性延拓
Extension of isometries between unit sphere
单位球面上的等距算子的延拓
On extension of isometries between the unit spheres
型空间的单位球面间满等距映射的表现定理及等距延拓
Isometries between the unit spheres of l1 - sum of strictly convex normed spaces
和的单位球面之间的等距

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