Singular

D.6.21 spcurve_lib

Library:

spcurve.lib

Purpose:

Deformations and Invariants of CM-codim 2 Singularities

Author:

Anne Fruehbis-Krueger, [email protected]

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