1 citations · 1 across the 1 of their papers we have counts for
3 papers
math.DG2025
Ricci solitons of special Lorentzian Lie groups with a four-dimensional isometry group
Giovanni Calvaruso, Lorenzo Pellegrino, Amirhesam Zaeim
In the framework of the study of homogeneous Lorentzian three-manifolds, we consider here the only class of examples which admit a four-dimensional group of isometries but are neit…
math.DG2017★ 1 cited
On symmetries of the Heisenberg group
Wafaa Batat, Amirhesam Zaeim
We consider the three-dimensional Heisenberg group, equipped with any left-invariant metric, either Lorentzian or Riemannian. We completely classify their affine vector fields and…
math.DG2016
Symmetries of Lorentzian Three-Manifolds with Recurrent Curvature
Giovanni Calvaruso, Amirhesam Zaeim
Locally homogeneous Lorentzian three-manifolds with recurrect curvature are special examples of Walker manifolds, that is, they admit a parallel null vector field. We obtain a full…