Existence Results and KKT Optimality Conditions for Generalized Quasiconvex Functions

Fuente: arXiv
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Hauptverfasser: Alizadeh, M. H., Lara, F.
Format: Preprint
Veröffentlicht: 2026
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author Alizadeh, M. H.
Lara, F.
author_facet Alizadeh, M. H.
Lara, F.
contents We studied a new notion of generalized convex functions called $e$-quasi\-con\-ve\-xi\-ty, which encompasses both quasiconvex and $e$-convex functions, including all Lipschitz functions. By extending the standard properties of quasiconvex functions to $e$-quasiconvex functions, we establish sufficient conditions for the nonemptiness and compactness of the solution set when minimizing an $e$-quasiconvex function, leveraging generalized asymptotic functions, a result which remains applicable even when the set of minimizers is nonconvex. Furthermore, in the differentiable case, we ensure the sufficiency of the KKT optimality conditions when the constraint functions in the mathematical programming problems are $e$-quasiconvex. Finally, we illustrate our new results with several nonconvex (non-quasiconvex) examples.
format Preprint
id arxiv_https___arxiv_org_abs_2602_12455
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Existence Results and KKT Optimality Conditions for Generalized Quasiconvex Functions
Alizadeh, M. H.
Lara, F.
Optimization and Control
90C26, 49J53, 47H04, 47H05
We studied a new notion of generalized convex functions called $e$-quasi\-con\-ve\-xi\-ty, which encompasses both quasiconvex and $e$-convex functions, including all Lipschitz functions. By extending the standard properties of quasiconvex functions to $e$-quasiconvex functions, we establish sufficient conditions for the nonemptiness and compactness of the solution set when minimizing an $e$-quasiconvex function, leveraging generalized asymptotic functions, a result which remains applicable even when the set of minimizers is nonconvex. Furthermore, in the differentiable case, we ensure the sufficiency of the KKT optimality conditions when the constraint functions in the mathematical programming problems are $e$-quasiconvex. Finally, we illustrate our new results with several nonconvex (non-quasiconvex) examples.
title Existence Results and KKT Optimality Conditions for Generalized Quasiconvex Functions
topic Optimization and Control
90C26, 49J53, 47H04, 47H05
url https://arxiv.org/abs/2602.12455