### D.15.25 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.15.25.1 T1 |  | compute first order deformations
> D.15.25.2 T2 |  | compute second order deformations
> D.15.25.3 makeQPoly |  | create a QPoly
> D.15.25.4 fPiece |  | create a FirstOrderDeformation
> D.15.25.5 sPiece |  | create a SecondOrderDeformation
> D.15.25.6 makeLinks |  | create a FirstOrderDeformation of the links

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