The relations between space-time symmetries, noether symmetries and lie symmetries

In this study, it is provided information about importance of space-time symmetries in general theory of relativity first, and then some information about pp-waves space-time for which symmetry classes will be investigated is taken into account. Space-time symmetries, Noether gauge (NGS) and Lie point (LPS) symmetries are mentioned and it is emphasised that these symmetries due to computational techniques that are required should be associated with each other. Model Lagrangian and geodesic equations for pp-wave space-time classes are formed and these equations are used to compute Noether gauge and Lie point symmetries. Computations performed under this thesis, Noether gauge and Lie point symmetries are found to be related.