D. LaksovRoyal Institute of Technology, Stockholm, SwedenA. LascouxUniversité Paris VII, Paris, FranceA. ThorupUniversity of Copenhagen, Copenhagen, Denmark
Luis EscauriazaDepartamento de Matemáticas, Universidad del País Vasco Euskal Herriko UnivbertsitateaFrancisco Javier FernándezDepartamento de Matemáticas, Universidad del País Vasco Euskal Herriko Univbertsitatea
It is shown that if a function$u$satisfies a backward parabolic inequality in an open set Ω∉$R$^{$n$+1}and vanishes to infinite order at a point ($x$_{0}·$t$_{0}) in Ω, then$u(x, t$_{0})=0 for all$x$in the connected component of$x$_{0}in Ω⌢($R$^{$n$}×{$t$_{0}}).
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