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Abstract.
In this paper, essentially developing the method of [1] (H. H. Bang and M. T. Thu, A Gagliardo-Niremberg inequality for Orlicz spaces,
East J. On Approximations 10 (2004) 371--377) and [10] (E. M. Stein, Functions of exponential type, Ann. Math. 65
(1957) 582--592),
we give an extension of the Gagliardo-Nirenberg inequality to Lorentz spaces.
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