2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/19342Considering the system of interacting electrons in the lowest Landau level we show that the corresponding four-fermion Hamiltonian is invariant with respect to the local area-preserving transformations. Testing a certain class of interaction potentials, we find that this symmetry is universal with respect to a concrete type of potentials.Revtex4, 8 pagesMesoscale and Nanoscale PhysicsHigh Energy Physics - Theorytext