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Timeline for Gradient estimates

Current License: CC BY-SA 4.0

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Mar 15, 2022 at 21:03 answer added Quarto Bendir timeline score: 3
Sep 21, 2021 at 1:03 comment added user378654 The form of Harnack inequality they derive is straightforward to obtain with constants depending on, say, the supremum of the full curvature tensor: it can be derived from the standard Harnack inequality and elliptic/parabolic estimates. The key point is that their estimate depends only on a one-sided bound on the Ricci curvature, which is drastically less information and makes it relevant to geometric analysts. That said, I can't comment on specific instances of this form of Harnack in the literature before them (or dating back to Bernstein); their work likely popularized it to some extent.
Feb 19, 2021 at 18:34 history asked timur CC BY-SA 4.0