In applied mathematics, symmetric successive over-relaxation (SSOR), is a preconditioner. If the original matrix can be split into diagonal, lower and upper triangular as

A=D+L+L^\mathsf

then the SSOR preconditioner matrix is defined as

M=(D+L) D^ (D+L)^\mathsf

It can also be parametrised by

\omega

as follows.SSOR preconditioning
at

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M(\omega)= \left (  D + L \right ) D^ \left (  D + L\right)^\mathsf

References

Numerical linear algebra {{mathapplied-stub

See also

References