The paper get some rank equalities of scalar-involutory matrices by elementary operation.
运用初等变换方法探讨了数量对合矩阵的若干秩等式。
In this way, an elementary operation can be reused as a Web service without having to change the code.
通过这样，可以将基础操作作为Web服务使用，而不用更改代码。
Visits computer training: computer elementary operation eo, computer routine maintenance and service, commonly used software use and so on!
上门电脑培训：电脑基本操作，电脑日常维护与维修，常用软件使用等！
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