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D.3.1.12 symmat

Procedure from library matrix.lib (see matrix_lib).

Usage:
symmat(n[,id]); n integer, id ideal

Return:
symmetric nxn matrix, with entries from id (default: id=maxideal(1))

Note:
if id has less than n*(n+1)/2 elements, the matrix is filled with 0's, symmat(n); creates the generic symmetric matrix

Example:
 


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