Singular Manual: unitMatrix

| #### D.15.30.6 unitMatrix Procedure from library `rootisolation.lib` (see rootisolation_lib). Usage: `unitMatrix(n)`; `n int` Return: `n`x`n` unit interval matrix Example:
    LIB "rootisolation.lib";
    ring R = 0,(x,y),dp;
    unitMatrix(2);
    ==> [1, 1],[0, 0]
    ==> [0, 0],[1, 1]
    ==>
    unitMatrix(3);
    ==> [1, 1],[0, 0],[0, 0]
    ==> [0, 0],[1, 1],[0, 0]
    ==> [0, 0],[0, 0],[1, 1]
    ==>

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