A cusp-core-like challenge for modified Newtonian dynamics

We show that Modified Newtonian Dynamics (MOND) predict distinct galactic acceleration curve geometries in $g2$-space - the space of total observed centripetal accelerations $g_{\rm tot}$ vs inferred from baryonic matter N}$ and corresponding rotation speed curves: MOND modified gravity predicts cored for isolated galaxies while inertia yields neutral geometries, ie. neither cuspy or cored, based on a cusp-core classification galaxy geometry rather than DM density profiles. The can be applied both to models as well data implies {\it cusp-core} challenge observations, example galaxies, which is different so-called problem dark (DM). illustrate this by number also SPARC database, deviate significantly predictions.