Gauss Symbol and Unified Theory of Gravity and Electromagnetic Field in Reissner-Nordstrom and Kerr-Newman Solution

Abstract

Solutions of unified theory equations of gravity and electromagnetism satisfy Einstein Maxwe ll equation. Hence, solutions of the unified theory is Reissner Nordstrom solution , Kerr Newman solution in vacuum. In this careful point, Einstein gravity field equation’s energy momentum tensor has two sign. Therefore, according to the solution, the sign is treated. We found in revised Einstein gravity tensor equation , the condition is satisf ied by 2 order contravariant metric tensor two times product and Gauss symbol.