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Zero definite complex matrix
Formulation 0
A D999: Complex matrix $A \in \mathbb{C}^{N \times N}$ is zero definite if and only if \begin{equation} \forall \, z \in \mathbb{C}^{N \times 1} : z^T A z = 0 \end{equation}
Subdefinitions
» D5205: Zero definite basic real matrix