The hölder continuity of a class of 3-dimension ultraparabolic equations

We obtained the Cα continuity for weak solutions of a class of ultraparabolic equations with measurable coefficients of the form ∂tu=∂(a(x,y,t)∂xu)+b0(x,y,t)∂xu+b(x,y,t)∂yu, which generalized our recent results on KFP equations.