We construct general anisotropic cosmological scenarios governed by an f (R) gravitational
sector. Focusing then on Kantowski–Sachs geometries in the case of R n-gravity, and …

The spacetime homogeneous Gödel-type spacetimes which have four classes of metrics are
studied according to their matter collineations. The results obtained are compared with …

In this paper, we consider the homogeneous Gödel-type spacetimes and we completely
classify the Ricci bi-conformal vector fields on these spaces. Also, we show that all Ricci bi …

In this paper we investigate, from the dynamical systems perspective, the evolution of a
Kantowski-Sachs metric in a generic class of f (R) models. We present conditions (ie …

The matter collineation classifications of Kantowski-Sachs, Bianchi types I and III space
times are studied according to their degenerate and non-degenerate energy-momentum …

The Bianchi V spacetimes with perfect-fluid matter are classified according to their Ricci
collineations. We have found that in the degenerate case there are infinitely many Ricci …

Conformal Ricci collineations of static spherically symmetric spacetimes are studied. The
general form of the vector fields generating conformal Ricci collineations is found when the …

In this paper, we investigate Ricci Inheritance Collineations (RICs) in Kantowski–Sachs
spacetimes. RICs are discussed in detail when Ricci tensor is degenerate and …

The Ricci collineation classifications of Kantowski–Sachs, Bianchi types I and III spacetimes
are studied according to their degenerate and non-degenerate Ricci tensor. When the Ricci …

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 …