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PreprintarXiv licencearXiv

Subspaces of L1 spanned by the even and odd levels of the Haar system

Abstract

We prove that the closed subspace of L1[0,1] spanned by the even (respectively, odd) levels of the Haar system is not isomorphic to L1[0,1].

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BibTeX
@misc{speckhofer2026subspaces,
  title = {{Subspaces of $L^1$ spanned by the even and odd levels of the Haar system}},
  author = {Thomas Speckhofer},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.16735},
  eprint = {2609.16735},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.16735},
}
RIS
TY  - UNPB
TI  - Subspaces of L^1 spanned by the even and odd levels of the Haar system
AU  - Thomas Speckhofer
PY  - 2026
DA  - 2026/09/15
PB  - arXiv
DO  - 10.48550/arxiv.2609.16735
UR  - https://arxiv.org/abs/2609.16735
AB  - We prove that the closed subspace of L^1[0,1] spanned by the even (respectively, odd) levels of the Haar system is not isomorphic to L^1[0,1].
ER  -