%0 Journal Article %T A New Extension of Serrin's Lower Semicontinuity Theorem %A Hu Xiaohong %A Zhang Shiqing %J Mathematics %D 2012 %I arXiv %X 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 $x$. %U http://arxiv.org/abs/1205.2826v1