On the convergence of the exponential multiplier method for convex programming
Mathematical Programming: Series A and B
Asymptotic analysis for penalty and barrier methods in convex and linear programming
Mathematics of Operations Research
The Zero Duality Gap Property and Lower Semicontinuity of the Perturbation Function
Mathematics of Operations Research
A Unified Augmented Lagrangian Approach to Duality and Exact Penalization
Mathematics of Operations Research
A new augmented Lagrangian approach to duality and exact penalization
Journal of Global Optimization
Extended duality for nonlinear programming
Computational Optimization and Applications
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We provide a unifying geometric framework for the analysis of general classes of duality schemes and penalty methods for nonconvex constrained optimization problems. We present a separation result for nonconvex sets via general concave surfaces. We use this separation result to provide necessary and sufficient conditions for establishing strong duality between geometric primal and dual problems. Using the primal function of a constrained optimization problem, we apply our results both in the analysis of duality schemes constructed using augmented Lagrangian functions, and in establishing necessary and sufficient conditions for the convergence of penalty methods.