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Zeitschrift für Analysis und ihre Anwendungen

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Volume 22, Issue 1, 2003, pp. 3–16
DOI: 10.4171/ZAA/1128

Published online: 2003-03-31

Bernstein's 'Lethargy' Theorems in SF-Spaces

B. Micherda[1]

(1) Jagiellonian University, Krakow, Poland

We prove a version of Bernstein's 'lethargy' theorem for cones in the class of SF-spaces. Moreover, an analogue of the Bernstein theorem for linear projections onto closed subspaces of an SF-space is obtained. This extends results given by G. Lewicki.

Keywords: Bernstein's 'lethargy theorem', SF-spaces, Orlicz-Musielak spaces, best approximations, linear projections

Micherda B.: Bernstein's 'Lethargy' Theorems in SF-Spaces. Z. Anal. Anwend. 22 (2003), 3-16. doi: 10.4171/ZAA/1128