English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The homotheties of spherically symmetric spacetimes admitting $G_4$ , $G_6$and $G_{10}$ as maximal isometry groups are already known, whereas for thespace-times admitting $G_3$ as isometry groups, the solution in the form ofdifferential constraints on metric coefficients requires furtherclassification. For a class of spherically symmetric space-times admitting$G_3$ as maximal isometry groups without imposing any restriction on thestress-energy tensor, the metrics along with their corresponding homothetiesare found. For the one case the metric is found along with its homothety vectorthat satisfies an additional constraint and is illustrated with the help of anexample of a metric. For another case the metric and the correspondinghomothety vector are found for a subclass of spherically symmetric space-timesfor which the differential constraint is reduced to separable form.Stress-energy tensor and related quantities of the metrics found are given inthe relevant section.

Homotheties of a Class of Spherically Symmetric Space-Times Admitting $G_3$ as Maximal Isometry Group