... 内直和 internal direct sum; internaldirectsum 拟直和 quasi-direct sum; quasi-directsum 弱直和 weak direct sum ...
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The definition of similar quasi-direct sum of matrix is introduced. Andthe connection with group inverse is discussed. Some properties and applications are obtained.
首先引入矩阵的相似准直和的定义，讨论了它和群逆的关系，得到了一些性质和应用．。
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