2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/152791We prove that if a non-atomic separable Banach lattice in a weak Hilbert space, then it is lattice isomorphic to $L_2(0,1)$.Functional AnalysisA Note on Unconditional Structures in Weak Hilbert Spacestext