Let $A \in \mathbb{R}^{N \times N}$ be an D4571: Real matrix such that
| (i) | $A$ is an D5871: Invertible real matrix |
| (ii) | $B$ is an D2089: Inverse matrix for $A$ |
Then
| (1) | $A^T$ is an D5871: Invertible real matrix |
| (2) | $B^T$ is an D2089: Inverse matrix for $A^T$ |