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The base sets of primitive zero-symmetric sign pattern matrices

机译:基本零对称符号模式矩阵的基集

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In [J.Y. Shao, L.H. You, Bound on the base of irreducible generalized sign pattern matrices, Discrete Math., in press], Shao and You extended the concept of the base from powerful sign pattern matrices to non-powerful (and generalized) sign pattern matrices. In this paper, we study the bases of primitive zero-symmetric sign pattern (and generalized sign pattern) matrices. Sharp upper bounds of the bases are obtained. We also show that there exist no "gaps" in the base sets of the classes of such matrices. (C) 2007 Elsevier Inc. All rights reserved.
机译:在[J.Y. Shao,L.H. You,基于不可约的广义符号模式矩阵的约束,Discrete Math。,在印刷中],Shao和You将基础的概念从强大的符号模式矩阵扩展到了非有效的(和广义的)符号模式矩阵。在本文中,我们研究了原始零对称符号模式(和广义符号模式)矩阵的基础。获得了尖锐的碱基上限。我们还表明,在此类矩阵的基类集中不存在“缺口”。 (C)2007 Elsevier Inc.保留所有权利。

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