ThmDex – An index of mathematical definitions, results, and conjectures.
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Deduction system
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Zermelo-Fraenkel set theory
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Binary cartesian set product
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Complex matrix standard submatrix
Complex square matrix standard minor
Complex square matrix cofactor
Definition D6184
Complex cofactor matrix
Formulation 0
Let $A \in \mathbb{C}^{N \times N}$ be a D6159: Complex square matrix such that
(i) $N \in \{ 2, 3, 4, \ldots \}$ is a D5094: Positive integer
The cofactor matrix for $A$ is the D6159: Complex square matrix \begin{equation} \begin{bmatrix} \text{Cof}_A (1, 1) & \text{Cof}_A (1, 2) & \cdots & \text{Cof}_A (1, N) \\ \text{Cof}_A (2, 1) & \text{Cof}_A (2, 2) & \vdots & \text{Cof}_A (2, N) \\ \vdots & \cdots & \ddots & \vdots \\ \text{Cof}_A (N, 1) & \text{Cof}_A (N, 2) & \cdots & \text{Cof}_A (N, N) \end{bmatrix} \end{equation}
Children
D6185: Complex adjugate matrix