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- W2009671421 abstract "It is well known that if S={λ1,…,λn} is a spectrum of a P-matrix, then ∥argλi∥ < π − πn. We show that if the number of elements of S in the right half plane, or in the left half plane, is given, then the above bound can be improved, namely, there exists α such that ∥argλi∥ < α < π − πn. When S has exactly one element in the right half plane, it is shown that ∥bargλi∥ < 23π, independently of n." @default.
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- W2009671421 date "1983-07-01" @default.
- W2009671421 modified "2023-09-29" @default.
- W2009671421 title "Localization of the spectra of P- and P0-Matrices" @default.
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- W2009671421 doi "https://doi.org/10.1016/0024-3795(83)80025-1" @default.
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