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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);

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