The path polynomial of a complete graph.
On the inertia sets of some symmetric sign patterns
A matrix whose entries consist of elements from the set is a sign pattern matrix. Using a linear algebra theoretical approach we generalize of some recent results due to Hall, Li and others involving the inertia of symmetric tridiagonal sign matrices.
Cover matrices of posets and their spectra
We analyze the spectra of the cover matrix of a given poset. Some consequences on the multiplicities are provided.
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