activity
20142026
most citedOn Lipschitzian properties of implicit multifunctions

69 citations · 114 across the 17 of their papers we have counts for

collaborators

18 papers

math.OC2026

Characterizations of the Aubin property of the KKT-mapping in composite optimization by SC derivatives and quadratic bundles

Helmut Gfrerer, Jiri V. Outrata

For general set-valued mappings, the Aubin property is ultimately tied to limiting coderivatives by the Mordukhovich criterion. Likewise, the existence of single-valued Lipschitzia…

math.OC2024

On the role of semismoothness in nonsmooth numerical analysis: Theory

H. Gfrerer, J. V. Outrata

For the numerical solution of nonsmooth problems, sometimes it is not necessary that an exact subgradient/generalized Jacobian is at our disposal, but it suffices that a semismooth…

math.OC2022

On the isolated calmness property of implicitly defined multifunctions

Helmut Gfrerer, Jiri V. Outrata

The paper deals with an extension of the available theory of SCD (subspace containing derivatives) mappings to mappings between spaces of different dimensions. This extension enabl…

math.NA2022

On the SCD semismooth* Newton method for generalized equations with application to a class of static contact problems with Coulomb friction

H. Gfrerer, M. Mandlmayr, J. V. Outrata +1

In the paper, a variant of the \ssstar Newton method is developed for the numerical solution of generalized equations, in which the multi-valued part is a so-called SCD (subspace c…

math.OC2021

On the application of the SCD semismooth* Newton method to variational inequalities of the second kind

Helmut Gfrerer, Jiri V. Outrata, Jan Valdman

The paper starts with a description of the SCD (subspace containing derivative) mappings and the SCD semismooth* Newton method for the solution of general inclusions. This method i…

math.OC2021

On (local) analysis of multifunctions via subspaces contained in graphs of generalized derivatives

Helmut Gfrerer, Jiri V. Outrata

The paper deals with a comprehensive theory of mappings, whose local behavior can be described by means of linear subspaces, contained in the graphs of two (primal and dual) genera…

math.OC2021

On the solution of contact problems with Tresca friction by the semismooth* Newton method

Helmut Gfrerer, Jiri V. Outrata, Jan Valdman

An equilibrium of a linear elastic body subject to loading and satisfying the friction and contact conditions can be described by a variational inequality of the second kind and th…

math.OC2020★ 2 cited

On the application of the semismooth* Newton method to variational inequalities of the second kind

Helmut Gfrerer, Jiri V. Outrata, Jan Valdman

The paper starts with a concise description of the recently developed semismooth* Newton method for the solution of general inclusions. This method is then applied to a class of va…

math.OC2019

On computation of optimal strategies in oligopolistic markets respecting the cost of change

Jiří V. Outrata, Jan Valdman

The paper deals with a class of parametrized equilibrium problems, where the objectives of the players do possess nonsmooth terms. The respective Nash equilibria can be characteriz…

math.OC2019★ 2 cited

On a semismooth* Newton method for solving generalized equations

H. Gfrerer, J. V. Outrata

In the paper, a Newton-type method for the solution of generalized equations (GEs) is derived, where the linearization concerns both the single-valued and the multi-valued part of…

math.OC2019

Stability analysis for parameterized variational systems with implicit constraints

Matúš Benko, Helmut Gfrerer, Jiří V. Outrata

In the paper we provide new conditions ensuring the isolated calmness property and the Aubin property of parameterized variational systems with constraints depending, apart from th…

math.OC2018

On the Aubin property of solution maps to parameterized variational systems with implicit constraints

Helmut Gfrerer, Jiri V. Outrata

In the paper a new sufficient condition for the Aubin property to a class of parameterized variational systems is derived. In these systems the constraints depend both on the param…

math.OC2018★ 10 cited

The Radius of Metric Subregularity

Asen L. Dontchev, Helmut Gfrerer, Alexander Y. Kruger +1

There is a basic paradigm, called here the radius of well-posedness, which quantifies the "distance" from a given well-posed problem to the set of ill-posed problems of the same ki…

math.OC2017★ 1 cited

On the Aubin property of a class of parameterized variational systems

Helmut Gfrerer, Jiří V Outrata

The paper deals with a new sharp criterion ensuring the Aubin property of solution maps to a class of parameterized variational systems. This class includes parameter-dependent var…

math.OC2016★ 69 cited

On Lipschitzian properties of implicit multifunctions

Helmut Gfrerer, Jiří V. Outrata

The paper is devoted to the development of new sufficient conditions for the calmness and the Aubin property of implicit multifunctions. As the basic tool one employs the direction…

math.OC2016★ 30 cited

On computation of limiting coderivatives of the normal-cone mapping to inequality systems and their applications

Helmut Gfrerer, Jiří V. Outrata

The paper concerns the computation of the limiting coderivative of the normal-cone mapping related to inequality constraints under weak qualification conditions. The obtain…

math.OC2014

Graphical Derivatives and Stability Analysis for Parameterized Equilibria with Conic Constraints

Boris Mordukhovich, Jiri Outrata, Hector Ramirez

The paper concerns parameterized equilibria governed by generalized equations whose multivalued parts are modeled via regular normals to nonconvex conic constraints. Our main goal…

math.OC2014

Identification of some nonsmooth evolution systems with illustration on adhesive contacts at small strains

L. Adam, J. V. Outrata, T. Roubicek

A class of evolution quasistatic systems which leads, after a suitable time discretization, to recursive nonlinear programs, is considered and optimal control or identification pro…