D.3.2.17 hessenberg
...................
Procedure from library linalg.lib (see linalg_lib).

Usage:
hessenberg(M); matrix M

Assume:
M constant square matrix

Return:
matrix H; Hessenberg form 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);
print(hessenberg(M));

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&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; User manual for <a href="http://www.singular.uni-kl.de/"><i>Singular</i></a> version 2-0-4, October 2002,
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