Singular

D.15.20 stanleyreisner_lib

Library:

stanleyreisner.lib

Purpose:

Deformations of Stanley-Reiser ideals

Authors:

Overview:

Firstly, we implement the graded pieces has certain degree of cotangent modules T1 and T2 for a general Stanley-Reiser ring. And the graded pieces of homomorphisms are represented by lists of integers.

Types:

Homomorphism class of homomorphisms

Procedures:

D.15.20.1 T1		compute first order deformations
D.15.20.2 T2		compute second order deformations
D.15.20.3 makeQPoly		create a QPoly
D.15.20.4 fPiece		create a FirstOrderDeformation
D.15.20.5 sPiece		create a SecondOrderDeformation
D.15.20.6 makeLinks		create a FirstOrderDeformation of the links