English

$L_{p}[0,1] \setminus \bigcup\limits_{q>p} L_{q}[0,1]$ is spaceable for every $p>0$

Functional Analysis 2012-08-30 v1

Abstract

In this short note we prove the result stated in the title; that is, for every p>0p>0 there exists an infinite dimensional closed linear subspace of Lp[0,1]L_{p}[0,1] every nonzero element of which does not belong to q>pLq[0,1]\bigcup\limits_{q>p} L_{q}[0,1]. This answers in the positive a question raised in 2010 by R. M. Aron on the spaceability of the above sets (for both, the Banach and quasi-Banach cases). We also complete some recent results from \cite{BDFP} for subsets of sequence spaces.

Keywords

Cite

@article{arxiv.1106.0309,
  title  = {$L_{p}[0,1] \setminus \bigcup\limits_{q>p} L_{q}[0,1]$ is spaceable for every $p>0$},
  author = {G. Botelho and V. V. Fávaro and D. Pellegrino and J. B. Seoane-Sepúlveda},
  journal= {arXiv preprint arXiv:1106.0309},
  year   = {2012}
}

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3 pages