D.5.9.1 isCMcod2
................
Procedure from library spcurve.lib (see spcurve_lib).

Usage:
isCMcod2(i); i an ideal

Return:
presentation matrix of i, if i is Cohen-Macaulay of codimension 2 

a zero matrix otherwise

Example:
LIB "spcurve.lib";
ring r=32003,(x,y,z),ds;
ideal i=xz,yz,x^3-y^4;
print(isCMcod2(i));
==> -y,-x2,
==> x, y3, 
==> 0, z   

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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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