2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/223275We provide two examples of complex homogeneous quadratic polynomials P on Banach spaces of the form l_1(I). The first polynomial P has both separable and nonseparable maximal zero subspaces. The second polynomial P has the property that while the index-set I is not countable, all zero subspaces of P are separable.Published in special issue dedicated to Isaac NamiokaFunctional AnalysisLogic46B26, 47H60text