Almost Kähler 4-dimensional Lie groups with $J$-invariant Ricci tensor

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/68227The aim of this paper is to determine left-invariant strictly almost Kähler structures on 4-dimensional Lie groups $(g, J, Ω)$ such that the Ricci tensor is $J$-invariant.Differential Geometry53C30, 53C15, 53D05Almost Kähler 4-dimensional Lie groups with $J$-invariant Ricci tensortext