The 5D to 4D projection is presented in a simple geometry giving the Perelman Theorem,
resulting in a 3D doughnut structure for the space manifold of the Lorentz space-time.
It is shown that in the lowest quantum state, this Lorentz manifold confines and gives the
de Broglie leptons from the massless 5D e-trinos. On the scale of the universe, it allows
for a model for the creation of galaxies.