Unified field theory classical field theory and, two years later, that of Theodor Kaluza, who extended General Relativity to five dimensions. Continuing in this latter direction, Oscar Klein proposed in 1926 that the fourth spatial dimension be curled up into a small, unobserved circle. In Kaluza–Klein theory, the gravitational curvature of the extra spatial direction behaves as an additional force similar to electromagnetism. These and other models of electromagnetism and gravity were pursued by Albert Einstein in his attempts at a classical unified field theory. By 1930 Einstein had already considered the Einstein–Maxwell–Dirac System [Dongen]. This system is (heuristically) the super-classical [Varadarajan] limit
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