The core of Quantum FFF Theory.
Below: M31 Complex Galaxy Rotation Curves explained by Triple-Black Hole Vacuum Dipole Repeller Gravity.
Dual GABHs ( Galaxy Anchor Black Holes) with equal mass and One Central BH with unequal mass seem to be responsible for the complex Galaxy Rotation Curves. The GABH and CentralBH mass ratios, seem to explain the observed variability of galaxies observed through the universe. (see also Dipole repeller gravity of Quantum FFF Theory.) see: http://vixra.org/pdf/1806.0368v1.pdf
Several Galaxies show even more complex rotation profiles, probably due to 2e generation GABHs due to merging processes.
See image below.