Eigen Cayley Mu

Eigen Cayley Mu = <float>

Description/Usage

This optional card is used by the ARPACK eigensolver as the second Cayley shift parameter. When the Cayley transformation is selected (see the Eigen Algorithm card), this value and Eigen Cayley Sigma are the two shift parameters. When the shift and invert (default) algorithm is used, this card is not applicable.

The default value is 1000.

Examples

Here is a sample card:

Eigen Cayley Mu = 10.0

Technical Discussion

When the Cayley algorithm is selected, this value and Eigen Cayley Sigma also determine which of the two Cayley transformation methods (A or B) is used by ARPACK.

This card is not applicable to the eggroll eigensolver, which takes shift values from the Eigen Initial Shifts card.

Theory

No Theory.

FAQs

No FAQs.

References

No References.