Strongly Unique Minimal Projections on Hyperplanes Original Research Article

G. Lewicki (J. Approx. Theory64 (1991), 181-202) studied strongly unique minimal projections in reflexive Banach spaces and in ln∞ he obtained a complete characterization of those hyperplanes that are the range of a strongly unique minimal projection. In this paper we extend this type of characterization to hyperplanes in l∞ and ln1.