Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4645789 | Applied Numerical Mathematics | 2010 | 10 Pages |
Abstract
The concept of minimal Geršgorin set was introduced by Richard Varga (1965) in [10], , and investigated in details in his book Geršgorin and his circles (2004), [12], . On the other hand, another type of localization of real eigenvalues, which can be considered as an alternative to well-known Geršgorin theorem, was introduced by Juan Manuel Peña (2001) in [7]. Here we are combining these two approaches, in order to get two alternative tools for getting some information about real eigenvalues, or real part of eigenvalues.
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