A note on the Schrödinger maximal function
@article{Bourgain2016ANO, title={A note on the Schr{\"o}dinger maximal function}, author={Jean Bourgain}, journal={Journal d'Analyse Math{\'e}matique}, year={2016}, volume={130}, pages={393-396} }
It is shown that control of the Schrödinger maximal function sup0 <t<1 ǀeitΔfǀ for f ∈ Hs(Rn) requires s ≥ n/2(n + 1).
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