RT Journal Article T1 Positivity for large time of solutions of the heat equation: The parabolic antimaximum principle A1 Díaz Díaz, Jesús Ildefonso A1 Fleckinger-Pellé, Jacqueline AB We study the positivity, for large time, of the solutions to the heat equation Q(a) (f,u(0)): [GRAPHIC] where Q is a smooth bounded domain in RN and a C R. We obtain some sufficient conditions for having a finite time t(p) > 0 (depending on a and on the data u(0) and f which are not necessarily of the same sign) such that u(t, x) > 0 For Allt > t(p), a.e.x is an element of Omega. PB American Institute of Mathematical Sciences SN 1078-0947 YR 2004 FD 2004 LK https://hdl.handle.net/20.500.14352/49976 UL https://hdl.handle.net/20.500.14352/49976 LA eng NO DGES (Spain) NO EC DS Docta Complutense RD 17 abr 2025