Compositions of projections in Banach spaces and relations between approximation properties

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/173879A necessary and sufficient condition for existence of a Banach space with a finite dimensional decomposition but without the $π$-property in terms of norms of compositions of projections is found.Functional Analysis46B07Compositions of projections in Banach spaces and relations between approximation propertiestext