Abstract
Every infinite dimensional Banach or Fréchet space X has a dense Baire (hence barrelled) subspace E of uncountable codimension such that every closed subspaee M of X with M∩E={0} is finite dimensional. This result solves negatively a problem raised recently by M. De Wilde and B. Tsirulnikov.
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Drewnowski, L. A solution to a problem of De Wilde and Tsirulnikov. Manuscripta Math 37, 61–64 (1982). https://doi.org/10.1007/BF01239945
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DOI: https://doi.org/10.1007/BF01239945