We develop a field theory for one-dimensional variational problems defined via integrands with low regularity and singular ellipticity. This is developed via a priori existence and regularity results for one-dimensional obstacle problems with such integrands.

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Richard Gratwick

School of Mathematics, The University of Edinburgh, United Kingdom

r.gratwick@ed.ac.uk

Mikhail A. Sychev

Sobolev Institute of Mathematics, Novosibirsk State University, Novosibirsk, Russia

masychev@math.nsc.ru

R. Gratwick, M. A. Sychev. “Field Theory for Integrands with Low Regularity.” Journal of Convex Analysis 28 (2021), No. 3, 959–966.