Description Usage Arguments Details Value Note Author(s) See Also Examples

the power of a matrix

1 |

`x` |
a numerical matrix object that the power of which should be calculated |

`n` |
The matrix to the power of |

`nf` |
The number of axes kept in the calculation of SVD and reconstruction |

`tol` |
The tolerance of the axis, singular vectors with singular value lower than tol will be ignored in the reconstruction. |

The power of a matrix is calculated in two steps: decompostion step: x=UDV' and the reconstruction step: x^n=U*D^n*V' In the reconstruction, the singular vectors with a singular value more than tol are kept.

A matrix x^n

Called by the wsvd function.

Chen Meng

See Also `wsvd`

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