Density of diagonalizable matrices in sets of structured matrices defined from indefinite scalar products
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For an (indefinite) scalar product [x,y]_B = x^HBy for B= ± B^H ∈ Gl_n(ℂ) on ℂ^n ×ℂ^n we show that the set of diagonalizable matrices is dense in the set of all B-selfadjoint, B-skewadjoint, B-unitary and B-normal matrices.
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