Note on positive semidefinite maximum nullity and positive semidefinite zero forcing number of partial 2-trees
Published in Electron. J. Linear Algebra, 2012
The definition of the positive semidefinite zero forcing number for simple graphs is extended to multigraphs; as for simple graphs, this parameter bounds the maximum positive semidefinite nullity from above.
Recommended citation: J. Ekstrand, C. Erickson, D. Hay, L. Hogben, and J. Roat. “Note on positive semidefinite maximum nullity and positive semidefinite zero forcing number of partial 2-trees.” Electron. J. Linear Algebra 23 (2012), 79—87.