%0 Journal Article %A Jiménez Sevilla, María Del Mar %A Lajara, Sebastián %T Quasicomplemented Subspaces of Banach Spaces and Separable Quotients %D 2023 %@ 1422-6383 %@ 1420-9012 %U https://hdl.handle.net/20.500.14352/104469 %X We present a result which generalizes the theorems of Gurariy-Kadets and Lindenstrauss-Rosenthal on quasicomplemented subspaces of Banach spaces. We also provide a solution in wide classes of Banach spaces of a problem posed by Ivan Singer concerning the existence of a w*-basic sequence in the dual of a Banach space which is biorthogonal toa given basic sequence (or more generally, a given minimal sequence) in that space, and other related problems. %~