Abstract
A matrix whose entries consist of elements from the set {+, −, 0} 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.
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References
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da Fonseca, C.M. On the inertia sets of some symmetric sign patterns. Czech Math J 56, 875–883 (2006). https://doi.org/10.1007/s10587-006-0062-0
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DOI: https://doi.org/10.1007/s10587-006-0062-0