### D.6.21 spcurve_lib

Library:
  spcurve.lib
Purpose:
  Deformations and Invariants of CM-codim 2 Singularities
Author:
  Anne Fruehbis-Krueger, anne@mathematik.uni-kl.de

Procedures:

> D.6.21.1 isCMcod2 |  | presentation matrix of the ideal i, if i is CM
> D.6.21.2 CMtype |  | Cohen-Macaulay type of the ideal i
> D.6.21.3 matrixT1 |  | 1st order deformation T1 in matrix description
> D.6.21.4 semiCMcod2 |  | semiuniversal deformation of maximal minors of M
> D.6.21.5 discr |  | discriminant of semiuniversal deformation
> D.6.21.6 qhmatrix |  | weights if M is quasihomogeneous
> D.6.21.7 relweight |  | relative matrix weight of N w.r.t. weights (W,a)
> D.6.21.8 posweight |  | deformation of coker(M) of non-negative weight
> D.6.21.9 KSpencerKernel |  | kernel of the Kodaira-Spencer map

User manual for Singular version 4.4.1, 2025, generated by texi2html.