Outline

Examples


Ext

Primdec

Normalize

MuPAD

Deform

Classify

Monodromy

Kodaira

Puiseux

Deformations of Singularities : Base Space


C is given by the 2x2-minors of the matrix:

over C[[x,y,z,u,v]].

LIB "deform.lib";
ring r=0,(x,y,z,u,v),ds;
matrix m[2][4]=x,y,z,u,y,z,u,v;
ideal f0=minor(m,2);
versal(f0);
setring Px;
Js;
=> Js[1,1]=-BD
=> Js[1,2]=-AD+D2
=> Js[1,3]=-CD


Hannover http://www.singular.uni-kl.de