On the spectra of P- and P0-matrices
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Abstract We consider some conjectures of D. Hershkowitz and A. Berman in concerning the localization of eigenvalues of P - and P 0 -matrices. We show that two of these conjectures are false. We improve a classical formula of Routh's to prove our results. Also we reconsider a theorem of Kellogg's with the generalized result.
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