| Package Name | GUPTRI |
| Author(s) | James Demmel and Bo Kagstrom |
| Version | no version number available |
| Date | 1999 |
| Language | Fortran 77, MATLAB |
| Platform(s) | any |
| References | 8.7 Singular Matrix Pencils, Generalized Non-Hermitian Eigenvalue Problems |
| Functionality | This package of routines contains robust software with error bounds for computing the generalized Schur decomposition of an arbitrary pencil A - zB (regular or singular). The decomposition (GUPTRI - Generalized Upper TRIangular form) is a generalization of the Schur canonical form of A - zI to matrix pencils and reveals the Kronecker structure of a singular pencil. |
| Location | http://www.cs.umu.se/~guptri |
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