Titlebook: Indefinite Linear Algebra and Applications; Israel Gohberg,Peter Lancaster,Leiba Rodman Textbook 2005 Birkhäuser Basel 2005 Inner product

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Real ,-Selfadjoint Matrices, be re-examined in this context. In particular, the reader will quickly verify that all the results and observations of Chapter 2 on the geometry of indefinite inner product spaces (when properly understood) are also valid for real spaces.

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General Perturbations. Stability of Diagonalizable Matrices, of those cases in which analytic perturbations of .-selfadjoint matrices retain spectral properties which are familiar from the classical hermitian case is obtained. Analogous results for perturbations of .-unitary matrices are also discussed.

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