English

On complete generators of certain Lie algebras on Danielewski surfaces

Complex Variables 2026-04-13 v3 Algebraic Geometry

Abstract

We study the Lie algebra of polynomial vector fields on a smooth Danielewski surface of the form xy=p(z)x y = p(z) with x,y,zCx,y,z \in \mathbb{C}. We provide explicitly given generators to show that: 1. The Lie algebra of polynomial vector fields is generated by 66 complete vector fields. 2. The Lie algebra of volume-preserving polynomial vector fields is generated by finitely many vector fields, whose number depends on the degree of the defining polynomial. 3. There exists a Lie sub-algebra generated by 44 LNDs whose flows generate a group that acts infinitely transitively on the Danielewski surface. The latter result is also generalized to higher dimensions where zCNz \in \mathbb{C}^N.

Cite

@article{arxiv.2406.14702,
  title  = {On complete generators of certain Lie algebras on Danielewski surfaces},
  author = {Rafael B. Andrist},
  journal= {arXiv preprint arXiv:2406.14702},
  year   = {2026}
}