Error bound results for generalized D-gap functions of nonsmooth variational inequality problems
Journal of Computational and Applied Mathematics
Gap functions and global error bounds for set-valued variational inequalities
Journal of Computational and Applied Mathematics
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We study the Clarke–Rockafellar directional derivatives of the regularized gap functions (and of some modified ones) for the variational inequality problem (VIP) defined by a locally Lipschitz but not necessarily differentiable function on a closed convex set in an Euclidean space. As applications we show that, under the strong monotonicity assumption, the regularized gap functions have fractional exponent error bounds and consequently that the sequences provided by an algorithm of Armijo type converge to the solution of the (VIP).