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D.8.2.4 unitMatrix2

Procedure from library interval.lib (see interval_lib).

Usage:
unitMatrix2(n)

Return:
nxn unit matrix

Example:
 
LIB "interval.lib";
ring R = 0,x,lp;
ivmat E = unitMatrix2(4); E;
==> [1, 1],[0, 0],[0, 0],[0, 0]
==> [0, 0],[1, 1],[0, 0],[0, 0]
==> [0, 0],[0, 0],[1, 1],[0, 0]
==> [0, 0],[0, 0],[0, 0],[1, 1]
==>

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