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D.3.2.24 jordanmatrix

Procedure from library linalg.lib (see linalg_lib).

Usage:
jordanmatrix(list(e,s,m)); ideal e, intvec s, intvec m

Assume:
ncols(e)==size(s)==size(m)

Return:
 
matrix J;  Jordan matrix with list(e,s,m)==jordan(J)

Example:
 
LIB "linalg.lib";
ring R=0,x,dp;
ideal e=ideal(2,3);
intvec s=1,2;
intvec m=1,1;
print(jordanmatrix(list(e,s,m)));
==> 2,0,0,
==> 0,3,0,
==> 0,1,3 


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