On the logarithm of the minimizing integrand for certain variational problems in two dimensions

@article{Akman2012OnTL,
  title={On the logarithm of the minimizing integrand for certain variational problems in two dimensions},
  author={Murat Akman and John L. Lewis and Andrew Vogel},
  journal={Analysis and Mathematical Physics},
  year={2012},
  volume={2},
  pages={79-88}
}
AbstractLet f be a smooth convex homogeneous function of degreep, 1 < p < ∞, on $${\mathbb{C} \setminus \{0\}.}$$ We show that if u is a minimizer for the functional whose integrand is $${f(\nabla v ), v}$$ in a certain subclass of the Sobolev space W1,p(Ω), and $${\nabla u \not = 0 }$$ at $${z \in \Omega,}$$ then in a neighborhood of z, $${ \log f (\nabla u ) }$$ is a sub, super, or solution (depending on whether p > 2, p < 2, or p = 2) to L where $$L \zeta=\sum_{k,j=1}^{2}\frac{\partial… 
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