2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/102197Relaxation theorems which apply to one, two and three-dimensional nonlinear elasticity are proved. We take into account the fact an infinite amount of energy is required to compress a finite line, surface or volume into zero line, surface or volume. However, we do not prevent orientation reversal.Classical Analysis and ODEs49J45text