A Differential Harnack Inequality for the FitzHugh-Nagumo Equation
Xiaodong Cao, Harry Fluck, Sophia Teng
Abstract
In this paper we develop a Li-Yau-Hamilton (LYH) type differential Harnack estimate for positive solutions to the FitzHugh-Nagumo equation on Rn. We then use our LYH-differential Harnack inequality to prove several properties about positive solutions to the equation, including a classical Harnack inequality and a lower bound for the speed of traveling wave solutions.
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