2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/73167Let E be a C*-correspondence over a C*-algebra \A with non-degenerate faithful left action. We show that E admits sufficiently many essential representations (i.e. representations ψsuch that ψ(E)H = H to recover the Cuntz-Pimsner algebra O_E.9 pagesOperator Algebras46L08; 46L30text