On the antimaximum principle for parabolic periodic problems with weight
T. Godoy, S. Paczka, E. Lami Dozo · 2002
Abstract. We prove that an antimaximum principle holds for the Neumann and Dirichlet periodic parabolic linear problems of second order with a time periodic and essentially bounded weight function. We also prove that an uniform antimaximum principle holds for the one dimensional Neumann problem which extends the corresponding elliptic case. 1.