18 citations · 18 across the 2 of their papers we have counts for
2 papers
gr-qc2010
Do the Ricci and energy-momentum tensors have "duality'' in the context of their Lie symmetries?
Hina Khan, Asghar Qadir, K. Saifullah +1
The Ricci and energy-momentum tensors have the same algebraic symmetries. In the Einstein equations they look ``dual'' to each other, in that interchanging them and inverting the g…
gr-qc2007★ 18 cited
Homotheties of Cylindrically Symmetric Static Manifolds and their Global Extension
Asghar Qadir, M. Sharif, M. Ziad
Cylindrically symmetric static manifolds are classified according to their homotheties and metrics. In each case the homothety vector fields and the corresponding metrics are obtai…