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eigenfactors

eigenfactors of a matrix

Syntax

eigenvectors(M: MAT, X: RINGELEM): LIST of RINGELEM

Description

M must be a square matrix, and X an indeterminate.

This function determines the eigenfactors of M , i.e. the irreducible factors of CharPoly of M .

Example

/**/ Use R ::= QQ[x]; /**/ M := mat([[0,2,0,0],[1,0,0,0],[0,0,0,2],[0,0,1,1]]); /**/ eigenfactors(M, x); [x +1, x -2, x^2 -2]