Wildness of the problem of classifying nilpotent Lie algebras of vector fields in four variables

V. M. Bondarenko, A. P. Petravchuk

Let $\mathbb{F}$ be a field $\mathbb{F}$ of characteristic zero. Let $W_n(\mathbb{F})$ be the Lie algebra of all $\mathbb{F}$-derivations with the Lie bracket $[D_1, D_2]:=D_1D_2-D_…