On the density of semisimple matrices in indefinite scalar product spaces
Keyword(s):
For an indefinite scalar product $[x,y]_B = x^HBy$ for $B= \pm B^H \in \mathbf{Gl}_n(\mathbb{C})$ on $\mathbb{C}^n \times \mathbb{C}^n$, it is shown that the set of diagonalizable matrices is dense in the set of all $B$-normal matrices. The analogous statement is also proven for the sets of $B$-selfadjoint, $B$-skewadjoint and $B$-unitary matrices.
1981 ◽
Vol 10
(1)
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pp. 1-14
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2004 ◽
Vol 385
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pp. 187-213
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1975 ◽
Vol 12
(1)
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pp. 97-104
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1999 ◽
Vol 302-303
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pp. 77-104
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1997 ◽
Vol 261
(1-3)
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pp. 91-141
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