Its open for discussion, I should have said, apologize. Anyone can take ownership of it, if they want. I'm retired and an Environmental Engineer.
Using the contraction of spherical space as a function of masses. CAn be used to solve 3-body problem (possibly any n-body problem) directly without iterations; calculating the new displacements between the 3 bodies is done.
Just need to put the centre of mass of the new triangle inside the original with the same center of mass for the system.
Then rotating the inside triangle to where the new positions take the shortest route from the old positions. Not using cartesian coordinates at all.
Attached is file as pdf
Discussion.Simulation of General Relativity.n.body.problems.pdf