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On Uniform Global Error Bounds for Convex Inequalities
Authors:H Hu
Institution:(1) Department of Mathematical Sciences, Northern Illinois University, DeKalb, IL 60115, USA
Abstract:This paper studies the existence of a uniform global error bound when a convex inequality g le 0, where g is a closed proper convex function, is perturbed. The perturbation neighborhoods are defined by small arbitrary perturbations of the epigraph of its conjugate function. Under certain conditions, it is shown that for sufficiently small arbitrary perturbations the perturbed system is solvable and there exists a uniform global error bound if and only if g satisfies the Slater condition and the solution set is bounded or its recession function satisfies the Slater condition. The results are used to derive lower bounds on the distance to ill-posedness.
Keywords:Convex inequality  Global error bound
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