This paper studies the bounded approximation property (BAP) in quasi-Banach spaces. In the first part of the paper, we show that the kernel of any surjective operator l(p) -> X has the BAP when X has it and 0 < p <= 1, which is an analogue of the corresponding result of Lusky for Banach spaces. We then obtain and study nonlocally convex versions of the Kadec-Pelczyfisld-Wojtaszczyk complementably universal spaces for Banach spaces with the BAP.
机构:
NYU, Courant Inst Math Sci, Dept Math, 251 Mercer St, New York, NY 10012 USANYU, Courant Inst Math Sci, Dept Math, 251 Mercer St, New York, NY 10012 USA