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Counterexamples to an edge spread question for zero forcing number. (English) Zbl 1285.05095

Summary: This note gives counterexamples to an edge spread problem on the zero forcing number.

MSC:

05C35 Extremal problems in graph theory
05C15 Coloring of graphs and hypergraphs
05C50 Graphs and linear algebra (matrices, eigenvalues, etc.)
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References:

[1] Zero forcing sets and the minimum rank of graphs, Linear Algebra Appl., 428, 1628-1648 (2008) · Zbl 1135.05035
[2] Edholm, C. J.; Hogben, L.; Huynh, M.; LaGrange, J.; Row, D. D., Vertex and edge spread of zero forcing number, maximum nullity, and maximum rank of a graph, Linear Algebra Appl., 436, 4352-4372 (2012) · Zbl 1241.05076
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