Abstract
In this paper we show that Musielak–Orlicz spaces are UMD spaces under the so-called Δ2 condition on the generalized Young function and its complemented function. We also prove that if the measure space is divisible, then a Musielak–Orlicz space has the UMD property if and only if it is reflexive. As a consequence we show that reflexive variable Lebesgue spaces L p(⋅) are UMD spaces.
Dedicated to Ben de Pagter on the occasion of his 65th birthday
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Acknowledgements
The authors would like to thank Emiel Lorist and Jan van Neerven for helpful comments. The authors “Nick Lindemulder” and “Mark Veraar” were supported by the Vidi subsidy 639.032.427 of the Netherlands Organisation for Scientific Research (NWO).
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Lindemulder, N., Veraar, M., Yaroslavtsev, I. (2019). The UMD Property for Musielak–Orlicz Spaces. In: Buskes, G., et al. Positivity and Noncommutative Analysis. Trends in Mathematics. Birkhäuser, Cham. https://doi.org/10.1007/978-3-030-10850-2_19
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DOI: https://doi.org/10.1007/978-3-030-10850-2_19
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