2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54036Some calculational errors in expressions derived previously by the first author for the effective action, or equivalently for the functional determinant, on sectors of a spherical cap are corrected. The formula for the change in the effective action under Weyl rescalings in the three dimensional case is also amended.3 pages, uses JyTeXHigh Energy Physics - Theorytext