Lower semicontinuity of variational integrals on elliptic complexes
Lower semicontinuity of variational integrals on elliptic complexes
We prove a lower semicontinuity result for variational integrals associated with a given first order elliptic complex, extending, in this general setting, a well known result in the case $ {\cal D}^{\prime}(\mathbb R^n,\mathbb R) \xrightarrow {\nabla}