Abstract
A necessary and sufficient condition for the W 1, p-quasi-convexity of integrands to imply the lower semicontinuity of the corresponding integral functionals with respect to the weak convergence of sequences in W 1, p is obtained. It is shown that the absence of the Lavrent’ev phenomenon in minimization problems with linear boundary data is sufficient, under a minor technical assumption, for the lower semicontinuity of integral functionals with quasi-convex integrands.
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Original Russian Text © M.A. Sychev, 2015, published in Doklady Akademii Nauk, 2015, Vol. 465, No. 4, pp. 411–414.
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Sychev, M.A. Solution of a Ball–Murat problem. Dokl. Math. 92, 727–730 (2015). https://doi.org/10.1134/S1064562415060253
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DOI: https://doi.org/10.1134/S1064562415060253