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Semidefinite geometry of the numerical range

open access: yes, 2008
The numerical range of a matrix is studied geometrically via the cone of positive semidefinite matrices (or semidefinite cone for short). In particular it is shown that the feasible set of a two-dimensional linear matrix inequality (LMI), an affine ...
Henrion, Didier
core   +1 more source

Monotonicity of positive semidefinite Hermitian matrices [PDF]

open access: bronze, 1972
Russell Merris, Stephen Pierce
openalex   +1 more source

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