| Antiquaternion | Antiquaternion |
| Dir_Elimination | Direct Elimination for LSE problem. |
| GQR | Generalized QR Factorization |
| Lagrange | Lagrange multipliers for LSE problem. |
| LSE | LSE package |
| LSE_GQR | LSE and GQR Factorization |
| Nullspace | Nullspace method for LSE problem. |
| Quaternion | Quaternion transformation |
| RQ | RQ Factorization of a matrix |