Relaxation for some dynamical problems

Dacorogna, B.

In: Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 1985, vol. 100, no. 1-2, p. 39-52

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    Summary
    In this article, we study the functional Where Ω ⊂ ĝn is a bounded open set and u: Ω ×(0, T)→ ĝm and when F: Rnm →R fails to be quasiconvex. We show that with respect to strong convergence of ∂u/∂t and weak convergence of ∇×u, the above functional behaves as where QF is the lower quasiconvex envelope of F