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D.6.14.3 matrixT1

Procedure from library spcurve.lib (see spcurve_lib).

Usage:
matrixT1(M,n); M matrix, n integer

Assume:
M is a presentation matrix of an ideal i, CM of codimension 2; consider i as a family of ideals in a ring in the first n variables where the remaining variables are considered as parameters

Return:
list consisting of the k x (k+1) matrix M and a module K_M such that T1=Mat(k,k+1;R)/K_M is the space of first order deformations of i

Example:
 


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            User manual for Singular version 3-1-6, Dec 2012, generated by texi2html.