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Note on counterexamples in strong unique continuation problems

Author: Thomas H. Wolff
Journal: Proc. Amer. Math. Soc. 114 (1992), 351-356
MSC: Primary 35B60; Secondary 35J05
MathSciNet review: 1014648
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Abstract: There are smooth functions on $ {\mathbb{R}^d}$ vanishing to infinite order at a point and satisfying the differential inequality $ \vert\Delta u\vert \leq V\vert u\vert$ with $ V \in $ weak $ {L^{d/2}}$, and with $ V \in {L^1}$ if $ d = 2$.

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