4 citations · 6 across the 9 of their papers we have counts for
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math.CO2007★ 1 cited
The inverse inertia problem for graphs
Wayne Barrett, H. Tracy Hall, Raphael Loewy
Let G be an undirected graph on n vertices and let S(G) be the set of all real symmetric n x n matrices whose nonzero off-diagonal entries occur in exactly the positions correspond…
math.CO2007
The Graphs for which the Maximum Multiplicity of an Eigenvalue is Two
Charles R. Johnson, Raphael Loewy, Paul Anthony Smith
Characterized are all simple undirected graphs such that any real symmetric matrix that has graph has no eigenvalues of multiplicity more than 2. All such graphs are partia…