2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/73812We show that some matrices are Schur multipliers and this is applied to obtain classes of operator-valued Foguel-Hankel operators similar to contractions. This provides partial answers to a problem of K. Davidson and the second author concerning CAR-valued Foguel-Hankel operators.Preprint versionFunctional AnalysisOperator Algebras47A20text