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In this paper we consider two particular classes of supremal functionals defined on Radon measures and we find necessary and sufficient conditions for their lower semicontinuity with respect to the weak* convergence. Some applications to the minimization of functionals defined on BV are presented.

In this paper we study the lower semicontinuity problem for a supremal functional of the form $F(u,\Omega )=\underset{x\in \Omega }{\mathrm{ess}\sup }f(x,u\left(x\right),Du\left(x\right))$ with respect to the strong convergence in $L^{\infty }\left(\Omega \right)$, furnishing a comparison with the analogous theory developed by Serrin for integrals. A sort of Mazur’s lemma for gradients of uniformly converging sequences is proved.

In this paper we study the lower semicontinuity problem for a supremal functional of the form $F(u,\Omega )=\underset{x\in \Omega }{\mathrm{ess}\sup }f(x,u\left(x\right),Du\left(x\right))$ with respect to the strong convergence in (Ω), furnishing a comparison with the analogous theory developed by Serrin for integrals. A sort of Mazur's lemma for gradients of uniformly converging sequences is proved.