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arxiv 1205.2826 v1 pith:SXRMRQY3 submitted 2012-05-13 math.FA

A New Extension of Serrin's Lower Semicontinuity Theorem

classification math.FA
keywords lowersemicontinuitycontinuityextensionomegaserrintheoremvariable
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In this paper, we present a new extension of the famous Serrin's lower semicontinuity theorem for the variational functional $\int_{\Omega}f(x,u,u')dx$,we prove its lower semicontinuity in $W_{loc}^{1,1}(\Omega)$ with respect to the strong $L_{loc}^{1}$ topology assuming that the integrand $f(x,s,\xi)$ has the usual continuity on all the three variables and the convexity property on the variable $\xi$ and the local absolute continuity on the variable $x$.

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