# Symmetric successive over-relaxation

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In applied mathematics, **symmetric successive over-relaxation (SSOR)**,^{[1]} is a preconditioner.

If the original matrix can be split into diagonal, lower and upper triangular as then the SSOR preconditioner matrix is defined as

It can also be parametrised by as follows.^{[2]}

## See alsoEdit

## ReferencesEdit

**^**Iterative methods at CFD-Online wiki**^**SSOR preconditioning at Netlib

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