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Unboundedness of the Ball Bilinear Multiplier Operator

Published online by Cambridge University Press:  11 January 2016

Geoff Diestel
Affiliation:
Department of Mathematics, University of South Carolina, Columbia, SC 29208, [email protected]
Loukas Grafakos
Affiliation:
Department of Mathematics, University of Missouri, Columbia, MO 65211, USA, [email protected]
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Abstract

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For all n > 1, the characteristic function of the unit ball in ℝ2n is not the symbol of a bounded bilinear multiplier operator from Lp(n) × Lq(n) to Lr(n) when 1/p + 1/q = 1/r and exactly one of p, q, or r′ = r/(r – 1) is less than 2.

Type
Research Article
Copyright
Copyright © Editorial Board of Nagoya Mathematical Journal 2007

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