2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/213579Quasiconformal homeomorphisms of the unit ball $B^n$ of ${\mathbb R}^n, n \ge 3,$ onto itself with identity boundary values are studied. A spatial analogue of Teichmüller's theorem is proved.16 pagesComplex Variables30C65text