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math.CO2026
The forbidden structure for zero forcing number
Carlos A. Alfaro, Michael D. Barrus, Sergio Gerardo Gómez-Galicia +5
The {\it zero forcing number} of a graph , , is a well-studied parameter which arises from a color changing process and has strong connections to {\it minimum rank}, {\it…
math.CO2026
A strong nullity parameter for rooted graphs
Aida Abiad, Mary Flagg, H. Tracy Hall +2
The inverse eigenvalue problem of a graph studies the possible spectra of matrices associated with , including as an important subproblem the possible nullities of such a ma…