...现代管理数学〃Chapter 1 矩阵 1-15 矩阵加法性质 设A、B、C、O为同阶矩阵，则 (1) A + B = B + A 交换律(commutative property) (2) A + (B + C) = (A + B) + C 结合律(associative property) (3) A + O + O + A = A 同一律(identity property) 这里，零矩阵...
The paper shows that the method of proving the commutativeproperty of composition for the finite rotations by quaternions is simpler than that by vectors.
文中表明用四元数方法证明该定理比矢量法更为简单。
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This paper mainly discuss some property of ring which fit into anti-commutative law, and arrive at a conclusion that anti-commutative law is commutable.