
In this paper we develop a new approach for the stable approximation of a minimal surface problem associated with a relaxed Dirichlet problem in the space BV(Ω) of functions of bounded variation. The problem can be reformulated as an unconstrained minimization problem of a functional 𝒥 on BV(Ω) defined by 𝒥(u) = 𝒜(u) + ∫∂Ω|Tu − Φ|, where 𝒜(u) is the “area integral” of u with respect to Ω, T is the “trace operator” from BV(Ω) into L i(∂Ω), and ϕ is the prescribed data on the boundary of Ω. We establish convergence and stability of approximate regularized solutions which are solutions of a family of variational inequalities. We also prove convergence of an iterative method based on Uzawa′s algorithm for implementation of our regularization procedure.
65J20, Numerical optimization and variational techniques, nondifferentiable optimization in nonreflexive spaces, Numerical solutions of ill-posed problems in abstract spaces; regularization, QA1-939, Minimal surfaces and optimization, Regularity of solutions in optimal control, bounded variation, 49J45, Uzawa′s algorithm, 49N60, 49J40, 26A45, 65K10, Methods involving semicontinuity and convergence; relaxation, Numerical solutions to equations with nonlinear operators, 65J15, Functions of bounded variation, generalizations, Variational inequalities, 49Q05, relaxed Dirichlet problem, Minimal surface problem, regularization, minimal surface problem, bounded variation norm, Uzawa's algorithm., Mathematics, variational inequalities, Uzawa's algorithm
65J20, Numerical optimization and variational techniques, nondifferentiable optimization in nonreflexive spaces, Numerical solutions of ill-posed problems in abstract spaces; regularization, QA1-939, Minimal surfaces and optimization, Regularity of solutions in optimal control, bounded variation, 49J45, Uzawa′s algorithm, 49N60, 49J40, 26A45, 65K10, Methods involving semicontinuity and convergence; relaxation, Numerical solutions to equations with nonlinear operators, 65J15, Functions of bounded variation, generalizations, Variational inequalities, 49Q05, relaxed Dirichlet problem, Minimal surface problem, regularization, minimal surface problem, bounded variation norm, Uzawa's algorithm., Mathematics, variational inequalities, Uzawa's algorithm
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