D.3.2.19 eigenvals

Procedure from library linalg.lib (see linalg_lib).

Usage:

eigenvals(M); matrix M

Assume:

eigenvalues of M in basefield

Return:

list l; ideal l[1]; number l[1][i]; i-th eigenvalue of M intvec l[2]; int l[2][i]; multiplicity of i-th eigenvalue of M

Example:

LIB "linalg.lib";
ring R=0,x,dp;
matrix M[3][3]=3,2,1,0,2,1,0,0,3;
print(M);
eigenvals(M);