Programs (Macaulay2) 

associated with the paper Invariant deformation theory of affine schemes with reductive group action

Here are two text files containing Macaulay 2 code, which we used in the article Invariant deformation theory of affine schemes with reductive group action (joint work with Christian Lehn). Our main reference was the book Computational Invariant Theory by H. Derksen and G. Kemper. The routines are far from optimal, improving them is work in progress. Feel free to comment or ask questions.

The program used in what was called situation 1 in our paper, that is, GL_3: prog_GL3.txt

The program used in what was called situations 2 and 3 in our paper, that is, prog_SO3_und_O3.txt

A detailed documentation will be coming up (hopefully) sooner or later.