Characterization of chordal graphs with equal vertex and algebraic connectivities using minimal vertex separators, plus a sufficient condition for maximal clique cardinality to be an integer Laplacian eigenvalue.
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Integer Laplacian Eigenvalues of Chordal Graphs
Characterization of chordal graphs with equal vertex and algebraic connectivities using minimal vertex separators, plus a sufficient condition for maximal clique cardinality to be an integer Laplacian eigenvalue.