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Published in:
2011 | OriginalPaper | Chapter
Reductions of Matrices Associated with Nowhere-Zero Flows
Authors : Martin Kochol, Nad’a Krivoňáková, Silvia Smejová, Katarína Šranková
Published in: Combinatorial Algorithms
Publisher: Springer Berlin Heidelberg
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Recently we have developed a method excluding certain subgraphs from a smallest counterexample to the 5-flow conjecture. This is based on comparing ranks of two matrices of large size. The aim of this paper is to be more effective by applying these methods so that we reduce the size of matrices used in the computation.