2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/111429This paper has been withdrawn by the author due to a gap in the proof of Lemma 3.4withdrawn by the author due to a gap in the proof of Lemma 3.4Operator AlgebrasFunctional AnalysisQuantum AlgebraAmenability and co-amenability in non-abelian group dualitytext