2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/114004Assuming the continuum hypothesis, we show that the Calkin algebra has 2^{aleph_1} outer automorphisms.13 pagesOperator AlgebrasFunctional AnalysisLogic46L40, 46L05, 03E50The Calkin algebra has outer automorphismstext