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);
	      

==> // Result belongs to ring Px. 

==> // Equations of total space of miniversal deformation are 
 
==> // given by Fs, equations of miniversal base space by Js. 

==> // Make Px the basering and list objects defined in Px by typing: 

==>    setring Px; show(Px); 


	      setring Px;
	      

	      Js;
	      

	      ==> Js[1,1]=BD
	      

	      ==> Js[1,2]=AD-D2
	      

	      ==> Js[1,3]=-CD

Paris 7-2-01

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