Abstract
Let \(G=(V,E)\) be a connected locally finite graph with the \(\mathrm {CD}^{\psi }\) condition for some \(\mathrm {C}^1\), concave function \(\psi : (0,+\infty )\rightarrow \mathbf {R}\). In this paper, based on the gradient estimate and Harnack inequality for the positive solution to the heat equation on G established by Münch, we get the heat kernel estimate. We also derive a logarithmic inequality of the heat kernel by an observation of the short time behavior of the heat kernel. We also define the Fisher information, the Shannon entropy and the \(\mathcal {W}\)-functional, and establish monotone inequalities for these functionals along the heat equation on G.
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Wang, L.F. Heat Kernel and Monotonicity Inequalities on the Graph. J Geom Anal 33, 38 (2023). https://doi.org/10.1007/s12220-022-01093-w
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DOI: https://doi.org/10.1007/s12220-022-01093-w