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D.4.25.16 isNormal

Procedure from library normal.lib (see normal_lib).

Usage:
isNormal(I); I ideal.

Return:
1 if R/I is normal and 0 if R/I is not normal, where R is the basering.

Example:
 
LIB "normal.lib";
ring R = 0, (x,y), dp;
ideal I1 = x2 - y3;
isNormal(I1);
==> 0
ideal I2 = x - y3;
isNormal(I2);
==> 1
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