Published online by Cambridge University Press: 15 September 2003
We consider minimization problems of the form
${\rm min}_{u\in \varphi +W^{1,1}_0(\Omega)}\int_\Omega [f(Du(x))-u(x)]\, {\rm d}x$
where $\Omega\subseteq \mathbb{R}^N$
is a bounded convex open set, and the
Borel function $f\colon \mathbb{R}^N \to [0, +\infty]$
is assumed to be
neither convex nor coercive. Under suitable assumptions involving
the geometry of Ω and the zero level set of f, we prove
that the viscosity solution of a related Hamilton–Jacobi equation
provides a minimizer for the integral functional.