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# MFNEXPOKIT

MFNEXPOKIT = “expokit” - An Arnoldi method tailored for the matrix exponential, as implemented in the Expokit package.

## Notes

This solver implements the method of Expokit natively in SLEPc, rather than interfacing to the original Expokit software [Sidje, 1998].

The method uses Arnoldi relations to compute \(\exp(\alpha A)v_\mathrm{last}\) for several time steps, where \(\alpha\) is the time step size.

## References

[Sid98]

R. B. Sidje. Expokit: a software package for computing matrix exponentials. ACM Trans. Math. Software, 24(1):130–156, 1998. doi:10.1145/285861.285868.

## See Also

MFN: Matrix Function, `MFN`, `MFNType`, `MFNSetType()`

## Level

beginner

## Location

src/mfn/impls/expokit/mfnexpokit.c

Index of all MFN routines Table of Contents for all manual pages Index of all manual pages