Balanced 0-1 Matrices I. Decomposition

Balanced 0-1 Matrices I. Decomposition
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平衡0-1矩阵一、分解

DOI:
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发表时间:
2001
期刊:
J. Comb. Theory B
影响因子:
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通讯作者:
Kristina Vuskovic
Kristina Vuskovic
中科院分区:
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文献类型:
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作者:
M. Conforti;Gérard Cornuéjols;Ajai Kapoor;Kristina Vuskovic

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一个0±1的矩阵是平衡的,如果在每一行和每一列有两个非零元素的平方子矩阵中,元素的和是4的倍数。本文推广了Conforti, Cornuejols, and Rao (1999, J. Combin)得到的平衡0,1矩阵的分解。Ser的理论。B77、292 ?406)到平衡的0,±1矩阵的类。因此,我们得到了一个多项式时间算法来识别平衡的0,±1矩阵。
A 0, ±1 matrix is balanced if, in every square submatrix with two nonzero entries per row and column, the sum of the entries is a multiple of four. This paper extends the decomposition of balanced 0, 1 matrices obtained by Conforti, Cornuejols, and Rao (1999, J. Combin. Theory Ser. B77, 292?406) to the class of balanced 0, ±1 matrices. As a consequence, we obtain a polynomial time algorithm for recognizing balanced 0, ±1 matrices.