| QcholUtDU | 'UtDU' decomposition of a rational matrix |
| Qdet | Determinant of a rational matrix |
| Qinverse | Inverse of a rational matrix |
| QisInjective | Check injectivity |
| QisInvertible | Check invertibility |
| QisSurjective | Check surjectivity |
| Qkernel | Kernel of a rational matrix |
| Qrange | Range of a rational matrix |
| Qrank | Rank of a rational matrix |