REMARK ON THE PAPER “SHARP WELL-POSEDNESS AND ILL-POSEDNESS RESULTS FOR A QUADRATIC NON-LINEAR SCHRÖDINGER EQUATION” BY I. BEJENARU AND T. TAO

In the present paper, we consider the paper “Sharp well-posedness and ill-posedness results for a quadratic non-linear Schrödinger equation,” J. Funct. Anal. 233 (2006), 228–259. The argument in it is very clever, but there seem to be a few errors in the proof. The purpose of this paper is to give a corrected proof.

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