A polynomial recognition algorithm for balanced matrices

被引：11

作者：

Zambelli, G ^{[1
]}

机构：

[1] Univ Waterloo, Dept Combinator & Optimizat, Waterloo, ON N2L 3G1, Canada

来源：

JOURNAL OF COMBINATORIAL THEORY SERIES B | 2005年 / 95卷 / 01期

关键词：

balanced matrices; recognition algorithm; signed bipartite graphs;

D O I：

10.1016/j.jctb.2005.02.006

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

A 0, +/- 1 matrix is balanced if it does not contain a square submatrix with two nonzero elements per row and column in which the sum of all entries is 2 modulo 4. Conforti et al. (J. Combin. Theory B 77 (1999) 292; B 81 (2001) 275), provided a polynomial algorithm to test balancedness of a matrix. In this paper we present a simpler polynomial algorithm, based on techniques introduced by Chudnovsky and Seymour (Combinatorica, to appear) for Berge graphs. (C) 2005 Elsevier Inc. All rights reserved.

引用

页码：49 / 67

页数：19

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