A Subelliptic Analogue of Aronson-Serrin's Harnack Inequality

Luca Capogna, Giovanna Citti, Garrett Rea

We show that the Harnack inequality for a class of degenerate parabolic quasilinear PDE $$\p_t u=-X_i^* A_i(x,t,u,Xu)+ B(x,t,u,Xu),$$ associated to a system of Lipschitz continuous…