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# KSPQMRCGS

Implements the QMRCGStab method.

### Options Database Keys

see KSPSolve()

### Notes

Only right preconditioning is supported.

### References

| * | - Chan, Gallopoulos, Simoncini, Szeto, and Tong (SISC 1994), Ghai, Lu, and Jiao (NLAA 2019)

### See Also

KSPCreate(), KSPSetType(), KSPType (for list of available types), KSP, KSPBICG, KSPFBICGS, KSPFBCGSL, KSPSetPCSide()

### Level

beginner

### Location

src/ksp/ksp/impls/bcgs/qmrcgs/qmrcgs.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages