Modified Makar-Limanov and Derksen invariants
Algebraic Geometry
2022-12-13 v1
Abstract
We investigate modified Makar-Limanov and Derksen invariants of an affine algebraic variety. The modified Makar-Limanov invariant is the intersection of kernels of all locally nilpotent derivations with slices and the modified Derksen invariant is the subalgebra generated by these kernels. We prove that modified Makar-Limanov invariant coincide with Makar-Limanov invariant if there exists a locally nilpotent derivation with a slice. Also we construct an example of a variety admitting a locally nilpotent derivation with a slice such that modified Derksen invariant does not coincide with Derksen invariant.
Keywords
Cite
@article{arxiv.2212.05899,
title = {Modified Makar-Limanov and Derksen invariants},
author = {Sergey Gaifullin and Anton Shafarevich},
journal= {arXiv preprint arXiv:2212.05899},
year = {2022}
}