Ricci inheritance collineations in Kantowski–Sachs spacetimes

T Hussain, A Musharaf, S Khan - International Journal of Geometric …, 2016 - World Scientific
In this paper, we investigate Ricci Inheritance Collineations (RICs) in Kantowski–Sachs
spacetimes. RICs are discussed in detail when Ricci tensor is degenerate and …

Ricci inheritance collineation in Bianchi type I spacetimes

T Hussain, SS Akhtar, S Khan - The European Physical Journal Plus, 2015 - Springer
In this article we explored the Ricci inheritance collineations (RICs) for Bianchi type I
spacetimes. When the Ricci tensor is non-degenerate, the general form of vector fields …

Ricci inheritance collineations in Bianchi type II spacetime

T Hussain, SS Akhtar, AH Bokhari… - Modern Physics Letters …, 2016 - World Scientific
In this paper, we present a complete classification of Bianchi type II spacetime according to
Ricci inheritance collineations (RICs). The RICs are classified considering cases when the …

A study of Bianchi type I spacetime according to their Ricci collineations

SS Akhtar, I Ahmad, M Shakeel, H Zahir… - Optical and Quantum …, 2024 - Springer
Rici collineations (RCs) have been used in this research to study the locally rotationally
symmetric (LRS) Bianchi type I spacetimes. To accomplish our objectives, the RC equations …

Conformal Ricci collineations in LRS Bianchi type V spacetimes with perfect fluid matter

F Khan, T Hussain, SS Akhtar - Modern Physics Letters A, 2017 - World Scientific
Considering the perfect fluid as a source of energy–momentum tensor, we have classified
locally rotationally symmetric (LRS) Bianchi type V spacetimes according to their conformal …

Matter collineations of Bianchi V spacetime

U Camci - International Journal of Modern Physics D, 2005 - World Scientific
Matter collineations of the Bianchi V spacetime are studied according to degenerate or non-
degenerate energy–momentum tensor. We have found that in degenerate case there are …

Conformal collineations of the Ricci and energy–momentum tensors in static plane symmetric space–times

SS Akhtar, T Hussain, AH Bokhari, F Khan - Theoretical and Mathematical …, 2018 - Springer
We provide a complete classification of static plane symmetric space–times according to
conformal Ricci collineations (CRCs) and conformal matter collineations (CMCs) in both the …

Lie symmetries of static spherically symmetric spacetimes by Rif tree approach

T Hussain, AH Bokhari, A Munawar - The European Physical Journal Plus, 2022 - Springer
In this paper, we classify Lie symmetries of static spherically symmetric spacetimes using Rif
tree approach. Instead of using direct integration techniques, we analyze the Lie symmetry …

Classification of Kantowski–Sachs metric via conformal Ricci collineations

T Hussain, F Khan, AH Bokhari… - International Journal of …, 2018 - World Scientific
In this paper, we present a classification of the Kantowski–Sachs spacetime metric
according to its conformal Ricci collineations (CRCs). Solving the CRC equations, it is …

Classification of a class of locally rotationally symmetric Bianchi type V spacetimes via Ricci collineations

US Al-Ali, AH Bokhari, T Hussain - Indian Journal of Physics, 2023 - Springer
In this paper, a class of locally rotationally symmetric Bianchi type V spacetime is
considered. By performing an appropriate transformation of the considered metric, a …