The Composing of A Gravitational Electromagnetic Tensor and Study it’s Properties

The aim of this work is to compose a gravitational electromagnetic tensor. We did that by a adding the metric tensor (g), which is diagonal, in to electromagnetic tensor (F) which is antisymmetric with zero diagnoal. We get a tensor invariant under the covariant transformation. This tensor has no difind symmetric properties, its line elements are similar to those of the metric tensor. It corresponds to the electromagnetic tensor in Mincowiski space.