An error is corrected and a complete proof of isomorphism theorem for tensor algebras over valued graphs is given.
纠正了关于赋值图的张量代数的同构定理证明中的一个疏忽，给出了此同构定理一个完整的证明。
2
According to the definition of stress tensor and by means of the tensor calculation rule and the concerned stipulations the equivalent theorem of shearing stress is proved in this paper.
本文根据应力张量定义，利用张量计算规则及有关规定，给出剪应力互等定理的证明。
3
A theorem on natural equivalences between a right exact additive functor F which preserves sums and some tensor functor ?B over functor categories is given.