How do you see this gravitational field equation? Can it replace Albert Einstein's theory of relativity? I found the "repulsion force", the opposite of Newton's gravity. With this force, with this change, Oliver.Heaviside's gravitational magnetic equations are not contradictory.I added a negative sign to the gravity acceleration formula, that is: f= -mg, and then I derived a Poisson equation with a negative sign:Δ^2φ=-4GρπPreprint The system of gravitational field equations