Classical unified field theories describe the properties of the electromagnetic field as a purely geometric phenomenon. Einstein tried to form a generalized theory of gravitation that would unify the gravitational and electromagnetic forces (and perhaps others), guided by a belief in a single origin for the entire set of physical laws. These attempts initially concentrated on additional geometric notions such as vierbeins and "distant parallelism", but eventually centered around treating both the metric tensor and the affine connection as fundamental fields. (Because they are not independent, the metric-affine theory was somewhat complicated.) In general relativity, these fields are symmetric (in the matrix sense), but
Unified Command of the area east of the canal (Egypt) Unified Command of the area east of the canal (Egypt) The Unified command of the area east of the canal is an Egyptian military formation. It groups the Second Field Army and the Third Field Army. A presidential Decree from Abdel Fattah al-Sisi appointed the command's first commander, Lieutenant General Osama Askar. The command was created to combat terrorism in the Sinai, and the unity of command and coordination between the second and third armies. President Abdel Fattah el-Sisi chaired a meeting of the Supreme Council of the Armed Forces in January 2015, during which he issued two declarations. The