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D.3.2.18 jordanmatrix
Procedure from library linalg.lib (see linalg_lib).
- Usage:
- jordanmatrix(jd); jd list of ideal and list of intvecs
- Return:
- The procedure returns the Jordan matrix J, satisfying:
- eigenvalues of J are given by jd[1]
- j-th Jordan block of J with eigenvalue jd[1][i] has size jd[2][i][j]
- Display:
- The procedure displays comments if printlevel>=1.
Example:
| LIB "linalg.lib";
ring R=0,x,dp;
list l;
l[1]=ideal(2,3);
l[2]=list(intvec(1),intvec(2));
print(jordanmatrix(l));
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