2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/147644We present an abstract result on removing regularization for singular potentials which are not semibounded from below. The relation between ``right'' regularizations and ``right'' self-adjoint extensions of the perturbed Schrödinger operators is examined.7 pages,CPT-94/P.3011,latexFunctional Analysistext