# Open Journal of Mathematical Optimization

Characterizations of Stability of Error Bounds for Convex Inequality Constraint Systems
Open Journal of Mathematical Optimization, Volume 3 (2022), article no. 2, 17 p.

In this paper, we mainly study error bounds for a single convex inequality and semi-infinite convex constraint systems, and give characterizations of stability of error bounds via directional derivatives. For a single convex inequality, it is proved that the stability of local error bounds under small perturbations is essentially equivalent to the non-zero minimum of the directional derivative at a reference point over the unit sphere, and the stability of global error bounds is proved to be equivalent to the strictly positive infimum of the directional derivatives, at all points in the boundary of the solution set, over the unit sphere as well as some mild constraint qualification. When these results are applied to semi-infinite convex constraint systems, characterizations of stability of local and global error bounds under small perturbations are also provided. In particular such stability of error bounds is proved to only require that all component functions in semi-infinite convex constraint systems have the same linear perturbation. Our work demonstrates that verifying the stability of error bounds for convex inequality constraint systems is, to some degree, equivalent to solving convex minimization problems (defined by directional derivatives) over the unit sphere.

Revised:
Accepted:
Published online:
DOI: 10.5802/ojmo.13
Keywords: Local and global error bounds, Stability, Convex inequality, Semi-infinite convex constraint systems, Directional derivative
Zhou Wei 1, 2; Michel Théra 3; Jen-Chih Yao 4

1 College of Mathematics and Information Science, Hebei University, Baoding 071002, China
2 Department of Mathematics, Yunnan University, Kunming 650091, China
3 XLIM UMR-CNRS 7252, Université de Limoges, Limoges, France Federation University Australia, Ballarat
4 Research Center for Interneural Computing, China Medical University Hospital China Medical University, Taichung 40402, Taiwan
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Zhou Wei; Michel Théra; Jen-Chih Yao. Characterizations of Stability of Error Bounds for Convex Inequality Constraint Systems. Open Journal of Mathematical Optimization, Volume 3 (2022), article  no. 2, 17 p. doi : 10.5802/ojmo.13. https://ojmo.centre-mersenne.org/articles/10.5802/ojmo.13/

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