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A local Hopf lemma for the Kohn Laplacian on the Heisenberg group

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Abstract

We prove a result on unique continuation at characteristic boundary points for the Kohn Laplacian on the Heisenberg group. The work is related to the paper by H. S. Shapiro (Exposition Math 13:247–275, 1995).

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Correspondence to S. Berhanu.

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Dedicated to the memory of Harold S. Shapiro.

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Work supported in part by NSF DMS 1855737.

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Berhanu, S. A local Hopf lemma for the Kohn Laplacian on the Heisenberg group. Anal.Math.Phys. 12, 72 (2022). https://doi.org/10.1007/s13324-022-00682-w

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