Lastly, we extend Erd s - Mordell inequality to n dimensional Euclidean space E ~ n ( n 3 ).
并将Erds-Mordell不等式推广到n维欧氏空间E ( n3 ).
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The essential property and developmental course of Euclidean space, symplectic space and bogus space are studied.
论述欧氏空间 、 辛空间、伪辛空间的本质属性及演变过程.
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