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arXiv · 1503.06694

Singular Sets and the Lavrentiev Phenomenon

Richard Gratwick
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Abstract

We show that non-occurrence of the Lavrentiev phenomenon does not imply that the singular set is small. Precisely, given a compact Lebesgue null subset of the line $E$ and an arbitrary superlinearity, there exists a smooth, strictly convex Lagrangian with this superlinear growth, such that all minimizers of the associated variational problem have singular set exactly $E$, but still admit approximation in energy by smooth functions.

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Richard Gratwick. 2015-03-23. Singular Sets and the Lavrentiev Phenomenon. https://doi.org/10.1017/s0308210513001510

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