The Aleksandrov maximum principle for viscosity supersolutions of parabolic nonlinear equations (Q1803353)

The fully nonlinear parabolic equation \[ u_ t-F(x,t,u,Du,D^ 2u)=0, \quad (x,t)\in Q \tag{*} \] is considered, where F is a uniformly elliptic operator. For viscosity supersolutions of equation (*) the author gives a clear and correct proof of the Aleksandrov maximum principle which has not been proved by \textit{L.Wang} [On the redularity theory of fully nonlinear parabolic equations, Diss.(1989)].