$C^*$-pseudo-Kac systems and duality for coactions of concrete Hopf $C^*$-bimodules

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/138946We study coactions of concrete Hopf $C^{*}$-bimodules in the framework of (weak) $C^{*}$-pseudo-Kac systems, define reduced crossed products and dual coactions, and prove an analogue of Baaj-Skandalis duality.22 pages; definition of a coaction extended/correctedOperator Algebras46L55 (Primary); 46L08 (Secondary)$C^*$-pseudo-Kac systems and duality for coactions of concrete Hopf $C^*$-bimodulestext