ThmDex – An index of mathematical definitions, results, and conjectures.
Real square matrix invertible iff determinant is
Formulation 0
Let $A \in \mathbb{R}^{N \times N}$ be a D6160: Real square matrix.
Then the following statements are equivalent
(1) $A$ is an D5871: Invertible real matrix
(2) $\text{Det} A$ is a D6173: Multiplicatively invertible real number