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19992007
most citedA lower bound for the diameter of solutions to the Ricci flow with nonzero

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math.DG1999

New Li--Yau--Hamilton Inequalities for the Ricci Flow via the Space-time Approach

Bennett Chow, Dan Knopf

We generalize Hamilton's matrix Li-Yau-type Harnack estimate for the Ricci flow by considering the space of all LYH (Li-Yau-Hamilton) quadratics that arise as curvature tensors of…