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B. Alshamary

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Open access Sep 2026

A New Class of Almost Controllable Graphs

A graph G is called a chain graph if it contains none of the graphs {2K2,C3,C5} as induced subgraphs. It is said to be almost controllable if it has exactly one non-main eigenvalue, that is, precisely one eigenvalue whose corresponding eigenspace is orthogonal to the all-ones vector. Within the class of chain graphs, w...

B. Alshamary, M. Andelic · 0 citations

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