In the intermediate state A and B are reduced to upper Hessenberg form.
When left eigenvectors DS_MAT_Y are requested, right eigenvectors of B are returned, while DS_MAT_X contains right eigenvectors of A.
DS_MAT_A | - first problem matrix obtained from Arnoldi | |
DS_MAT_B | - second problem matrix obtained from Arnoldi on the transpose | |
DS_MAT_Q | - orthogonal/unitary transformation that reduces A to Hessenberg form (intermediate step) or matrix of orthogonal Schur vectors of A | |
DS_MAT_Z | - orthogonal/unitary transformation that reduces B to Hessenberg form (intermediate step) or matrix of orthogonal Schur vectors of B |
0 | - Implicit QR (_hseqr) |
Location: src/sys/classes/ds/impls/nhepts/dsnhepts.c
Index of all DS routines
Table of Contents for all manual pages
Index of all manual pages