A note on local gradient estimate on Alexandrov spaces
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🧮 math.MG
keywords
alexandrovestimategradientlocalnotericcispacestype
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In this note, we prove Cheng-Yau type local gradient estimate for harmonic functions on Alexandrov spaces with Ricci curvature bounded below. We adopt a refined version of Moser's iteration which is based on Zhang-Zhu's Bochner type formula. Our result improves the previous one of Zhang-Zhu in the case of negative Ricci lower bound.
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