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Bool阵的逆阵     
We give a characterization of a regular Boolean matrix and prove that AB = I Implies that BA = I, where A and B are Boolean matrices whose elements belong to a Boolean algebra of a set with more than two elements.  相似文献   
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We construct real valued functions from infinite sequences. We also consider some properties of such functions and null sequences.  相似文献   
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An n × matrix A = {aij} will be called a 2-dimensional matrix of order n . We shall study groups of 2m -dimensional matrices of order n over a field of characteristic O with respect to an associative matrix product and we obtain the dimensions of such matrix groups.  相似文献   
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