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D.6.20.2 deform
Procedure from librarysing.lib (see sing_lib).
- Usage:
- deform(id); id=ideal or poly
- Return:
- matrix, columns are kbase of infinitesimal deformations
LIB "sing.lib"; ring r = 32003,(x,y,z),ds; ideal i = xy,xz,yz; matrix T = deform(i); print(T); ==> x,0,0, ==> 0,0,z, ==> 0,y,0 print(deform(x3+y5+z2)); ==> xy3,y3,xy2,y2,xy,y,x,1 |