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Gaussian heat kernel estimates: from functions to forms (1606.02423v1)
Published 8 Jun 2016 in math.AP
Abstract: On a complete non-compact Riemannian manifold satisfying the volume doubling property, we give conditions on the negative part of the Ricci curvature that ensure that, unless there are harmonic one-forms, the Gaussian heat kernel upper estimate on functions transfers to one-forms. These conditions do no entail any constraint on the size of the Ricci curvature, only on its decay at infinity.
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