A simplification in the proof of the non-isomorphism between \(H^1(\delta)\) and \(H^1(\delta^2)\) (Q2773426)
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scientific article; zbMATH DE number 1710016
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A simplification in the proof of the non-isomorphism between \(H^1(\delta)\) and \(H^1(\delta^2)\) |
scientific article; zbMATH DE number 1710016 |
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21 February 2002
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\(H^1(\delta)\)
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\(H^1(\delta^2)\)
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non-isomorphism
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A simplification in the proof of the non-isomorphism between \(H^1(\delta)\) and \(H^1(\delta^2)\) (English)
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The author presents a simplification in the proof that \(H^1(\delta)\) and \(H^1(\delta^2)\) are not isomorphic. The analytic backbone of this result is a martingale inequality of \textit{J. Bourgain} [J. Funct. Anal. 46, 45-57 (1982; Zbl 0492.46043)]. The author strengthens this inequality and simplifies its proof.
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