Abstract
We use a Carleman type inequality of Koch and Tataru to obtain quantitative estimates of unique continuation for solutions of second-order elliptic equations with singular lower order terms. First we prove a three sphere inequality and then describe two methods of propagation of smallness from sets of positive measure.
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Malinnikova, E., Vessella, S. Quantitative uniqueness for elliptic equations with singular lower order terms. Math. Ann. 353, 1157–1181 (2012). https://doi.org/10.1007/s00208-011-0712-x
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DOI: https://doi.org/10.1007/s00208-011-0712-x