Matúš Benko

ORCID: 0000-0003-3307-7939
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Research Areas
  • Optimization and Variational Analysis
  • Advanced Optimization Algorithms Research
  • Optimization and Mathematical Programming
  • Contact Mechanics and Variational Inequalities
  • Topology Optimization in Engineering
  • Fixed Point Theorems Analysis
  • Advanced Control Systems Optimization
  • Multi-Criteria Decision Making
  • Advanced Mathematical Modeling in Engineering
  • Phagocytosis and Immune Regulation
  • Dynamics and Control of Mechanical Systems
  • Iterative Methods for Nonlinear Equations
  • Aerospace Engineering and Control Systems
  • Advanced Numerical Analysis Techniques
  • Sparse and Compressive Sensing Techniques
  • Differential Equations and Numerical Methods
  • Advanced Algebra and Logic

University of Vienna
2020-2024

Johann Radon Institute for Computational and Applied Mathematics
2024

Johannes Kepler University of Linz
2016-2021

In this paper, we consider a sufficiently broad class of non-linear mathematical programs with disjunctive constraints, which, e.g. include complemetarity/vanishing constraints. We present an extension the concept [Formula: see text]-stationarity which can be easily combined well-known notion M-stationarity to obtain stronger property so-called text]-stationarity. show how (and thus also M-stationarity) efficiently verified for considered problem by computing text]-stationary solutions...

10.1080/02331934.2017.1387547 article EN cc-by Optimization 2017-10-12

The paper is devoted to the development of a comprehensive calculus for directional limiting normal cones, subdifferentials and coderivatives in finite dimensions. This encompasses whole range standard generalized differential (non-directional) notions relies on very weak (non-restrictive) qualification conditions having also character. derived rules facilitate application tools exploiting difficult problems variational analysis including, instance, various stability sensitivity issues....

10.1007/s11228-018-0492-5 article EN cc-by Set-Valued and Variational Analysis 2018-08-14

10.1007/s10957-024-02467-6 article EN Journal of Optimization Theory and Applications 2024-06-24

As a starting point of our research, we show that, for fixed order γ≥1 , each local minimizer rather general nonsmooth optimization problem in Euclidean spaces is either M-stationary the classical sense (corresponding to stationarity 1), satisfies conditions terms coderivative construction γ or asymptotically stationary with respect critical direction as well certain sense. By ruling out latter case constraint qualification not stronger than directional metric subregularity, end up new...

10.1007/s10107-024-02089-w article EN cc-by Mathematical Programming 2024-07-05

.In this paper, we propose second-order sufficient optimality conditions for a very general nonconvex constrained optimization problem, which covers many prominent mathematical programs. Unlike the existing results in literature, our prove to be sufficient, an essential local minimizer of second order, under merely basic smoothness and closedness assumptions on data defining problem. In part, comprehensive first- variational analysis disjunctive systems demonstrate how objects appearing can...

10.1137/22m1484742 article EN SIAM Journal on Optimization 2023-10-12

In the paper we provide new conditions ensuring isolated calmness property and Aubin of parameterized variational systems with constraints depending, apart from parameter, also on solution itself. Such include, e.g., quasi-variational inequalities implicit complementarity problems. Concerning property, possible restrictions imposed parameter are admitted. Throughout paper, tools directional limiting generalized differential calculus employed enabling us to impose only rather weak (non-...

10.1007/s11228-019-00516-1 article EN cc-by Set-Valued and Variational Analysis 2019-07-03

Estimating the regular normal cone to constraint systems plays an important role for derivation of sharp necessary optimality conditions. We present two novel approaches and introduce a new stationarity concept which is stronger than M-stationarity. apply our theory three classes mathematical programs frequently arising in literature.

10.1080/02331934.2016.1252915 article EN Optimization 2016-10-31

Abstract In this paper, we characterize Lipschitzian properties of different multiplier-free and multiplier-dependent perturbation mappings associated with the stationarity system a so-called generalized nonlinear program popularized by Rockafellar. Special emphasis is put on investigation isolated calmness property at around point. The latter decisive for locally fast convergence semismooth* Newton-type method Gfrerer Outrata. Our central result characterization point mapping via...

10.1007/s10957-024-02522-2 article EN cc-by Journal of Optimization Theory and Applications 2024-10-21

This paper is devoted to the study of tilt stability local minimizers, which plays an important role in both theoretical and numerical aspects optimization. notion has been comprehensively investigated unconstrained framework as well for problems nonlinear programming with $C^2$-smooth data. Available results nonpolyhedral conic programs were obtained only under strong constraint nondegeneracy assumptions. Here we develop approach second-order variational analysis, allows us establish...

10.1137/18m1213117 article EN SIAM Journal on Optimization 2019-01-01

Abstract We establish two types of estimates for generalized derivatives set-valued mappings which carry the essence basic patterns observed throughout pile calculus rules. These also illustrate role essential assumptions that accompany these patters, namely calmness on one hand and (fuzzy) inner calmness* other. Afterwards, we study relationship between sufficient conditions various notions (inner) calmness. The aforementioned are applied in order to recover several prominent rules tangents...

10.1007/s11228-021-00589-x article EN cc-by Set-Valued and Variational Analysis 2021-06-07

We propose an SQP algorithm for mathematical programs with vanishing constraints which solves at each iteration a quadratic program linear constraints. The is based on the newly developed concept of $${\mathcal {Q}}$$ -stationarity (Benko and Gfrerer in Optimization 66(1):61–92, 2017). demonstrate how {Q}}_M$$ -stationary solutions can be obtained. show that all limit points sequence iterates generated by basic method are least M-stationary some extension we also guarantee stronger property points.

10.1007/s10589-017-9894-9 article EN cc-by Computational Optimization and Applications 2017-02-06

In this paper, we study continuity and Lipschitzian properties of set-valued mappings, focusing on inner-type conditions. We introduce new notions inner calmness* and, its relaxation, fuzzy calmness*. show that polyhedral maps enjoy examine (fuzzy) a multiplier mapping associated with constraint systems in depth. Then utilize these to develop some rules generalized differential calculus, mainly for the primal objects (e.g. tangent cones). particular, propose an exact chain rule graphical...

10.46298/jnsao-2021-5881 article EN cc-by-nc-nd Journal of Nonsmooth Analysis and Optimization 2021-06-26

We propose an SQP algorithm for mathematical programs with complementarity constraints which solves at each iteration a quadratic program linear constraints.We demonstrate how strongly M-stationary solutions of this can be obtained by active set method without using enumeration techniques.We show that all limit points the sequence iterates generated our are least M-stationary.

10.14736/kyb-2016-2-0169 article EN Kybernetika 2016-04-21

Implicit variables of a mathematical program are which do not need to be optimized but used model feasibility conditions. They frequently appear in several different problem classes optimization theory comprising bilevel programming, evaluated multiobjective optimization, or nonlinear problems with slack variables. In order deal implicit variables, they often interpreted as explicit ones. Here, we first point out that this is light-headed approach induces artificial locally optimal...

10.46298/jnsao-2021-7215 article EN cc-by-nc-nd Journal of Nonsmooth Analysis and Optimization 2021-08-06

In this paper, we readdress the classical topic of second-order sufficient optimality conditions for optimization problems with nonsmooth structure. Based on so-called second subderivative objective function and indicator associated feasible set, one easily obtains abstract form. order to exploit further structure problem, e.g., composite terms in or sets given as (images of) pre-images closed under smooth transformations, make these fully explicit, study calculus rules mild conditions. To...

10.48550/arxiv.2206.03918 preprint EN cc-by-nc-sa arXiv (Cornell University) 2022-01-01

Much is known about when a locally optimal solution depends in single-valued Lipschitz continuous way on the problem's parameters, including tilt perturbations. less known, however, that and uniquely determined multiplier vector associated with it exhibit dependence as primal-dual pair. In classical nonlinear programming, such advantageous behavior tied to combination of standard strong second-order sufficient condition (SSOC) for local optimality linear independent gradient (LIGC) active...

10.48550/arxiv.2401.00601 preprint EN cc-by arXiv (Cornell University) 2024-01-01

In this paper, we characterize Lipschitzian properties of different multiplier-free and multiplier-dependent perturbation mappings associated with the stationarity system a so-called generalized nonlinear program popularized by Rockafellar. Special emphasis is put on investigation isolated calmness property at around point. The latter decisive for locally fast convergence semismooth* Newton-type method Gfrerer Outrata. Our central result characterization point mapping via combination an...

10.48550/arxiv.2401.08163 preprint EN cc-by-nc-sa arXiv (Cornell University) 2024-01-01

As a starting point of our research, we show that, for fixed order $\gamma\geq 1$, each local minimizer rather general nonsmooth optimization problem in Euclidean spaces is either M-stationary the classical sense (corresponding to stationarity $1$), satisfies conditions terms coderivative construction $\gamma$, or asymptotically stationary with respect critical direction as well $\gamma$ certain sense. By ruling out latter case constraint qualification not stronger than directional metric...

10.48550/arxiv.2402.16530 preprint EN arXiv (Cornell University) 2024-02-26

We propose an SQP algorithm for mathematical programs with vanishing constraints which solves at each iteration a quadratic program linear constraints. The is based on the newly developed concept of $\mathcal Q$-stationarity [5]. demonstrate how Q_M$-stationary solutions can be obtained. show that all limit points sequence iterates generated by basic method are least M-stationary and some extension we also guarantee stronger property Q_M$-stationarity points.

10.48550/arxiv.1611.08202 preprint EN other-oa arXiv (Cornell University) 2016-01-01

In this paper we consider a sufficiently broad class of nonlinear mathematical programs with disjunctive constraints, which, e.g., include complemetarity/vanishing constraints. We present an extension the concept ${\mathcal Q}$-stationarity as introduced in recent [2]. can be easily combined well-known notion M-stationarity to obtain stronger property so-called Q}_M$-stationarity. show how Q}_M$-stationarity (and thus also M-stationarity) efficiently verified for considered problem by...

10.48550/arxiv.1611.08206 preprint EN other-oa arXiv (Cornell University) 2016-01-01
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