相對論]十四、向量、方向微分、切空間、對偶向量空間
回答: 对一个协变矢量Xdx求微分,∇(Xdx)=∇(X)dx+X∇(dx),第一项中只对矢量的分量
由 marketreflections
于 2011-09-16 20:38:25
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