Results 1 to 10 of about 1,032 (207)

Restrictive metric regularity and generalized differential calculus in Banach spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We consider nonlinear mappings f:X→Y between Banach spaces and study the notion of restrictive metric regularity of f around some point x¯, that is, metric regularity of f from X into the metric space E=f(X).
Boris S. Mordukhovich, Bingwu Wang
doaj   +1 more source

Provably Convergent Low‐Rank Grayscale Image Fusion via Adaptive Weighted Nuclear Norm Minimization

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2026, Issue 1, 2026.
We propose a fully unsupervised, convex, and globally convergent framework for multimodal grayscale image fusion based on adaptive weighted nuclear norm minimization (WNNM). By formulating the fusion task as a low‐rank matrix recovery problem with data‐driven singular value reweighting, the method automatically preserves salient structural features ...
Gargi Trivedi, Muhammad Ahsan
wiley   +1 more source

Local subdifferentials and multivariational inequalities in Banach and Frechet spaces [PDF]

open access: yesOpuscula Mathematica, 2008
Some functional-topological concepts of subdifferential and locally subdifferential maps in Frechet spaces are established. Multivariational inequalities with an operator of the pseudo-monotone type, connected with subdifferential maps, are considered.
Pavlo O. Kasyanov   +2 more
doaj  

Optimal Controls of Second‐Order Delayed Differential Systems Governed by Clarke Subdifferential and History‐Dependent Hemivariational Inequalities

open access: yesJournal of Function Spaces, Volume 2026, Issue 1, 2026.
This paper investigates the existence of mild solutions and optimal controls for a class of second‐order delayed neutral nonautonomous evolution systems involving hemivariational inequalities, history‐dependent operators, and Clarke′s generalized subdifferential in Hilbert spaces. The novelty of the proposed framework lies in the simultaneous treatment
Hasanen A. Hammad   +3 more
wiley   +1 more source

ERM Reformulation for Stochastic Horizontal Linear Complementarity Problems: Convergence Analysis and a Gradient Algorithm

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
This paper investigates the stochastic horizontal linear complementarity problem (S‐HLCP). By employing a complementarity function, we reformulate the S‐HLCP as an expected residual minimization (ERM) problem. We first establish sufficient conditions based on the R0‐matrix property to ensure the coercivity of the ERM problem.
Jianhua Peng   +2 more
wiley   +1 more source

Optimality Conditions Characterizing Approximate Solutions for DC Composite Programs

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
This paper concerns DC composite optimization problems with conic constraints. By virtue of epigraph of conjugate functions, we introduce some new regularity conditions. Under the new regularity conditions, we give some necessary optimality conditions for ε‐optimal solutions, global optimal solutions, and local optimal solutions by using the ε ...
Gang Li, Qiqiong Chen, Smritijit Sen
wiley   +1 more source

Maximal pseudomonotonicity of generalized subdifferentials of explicitly quasiconvex functions

open access: yesJournal of Numerical Analysis and Approximation Theory, 1988
Not available.
Radu Precup
doaj   +2 more sources

Subdifferential Properties of Minimal Time Functions Associated with Set-Valued Mappings with Closed Convex Graphs in Hausdorff Topological Vector Spaces

open access: yesJournal of Function Spaces and Applications, 2013
For a set-valued mapping M defined between two Hausdorff topological vector spaces E and F and with closed convex graph and for a given point (x,y)∈E×F, we study the minimal time function associated with the images of M and a bounded set Ω⊂F defined by ...
Messaoud Bounkhel
doaj   +1 more source

Attractors of asymptotically periodic multivalued dynamical systems governed by time-dependent subdifferentials

open access: yesElectronic Journal of Differential Equations, 2004
We study a nonlinear evolution equation associated with time-dependent subdifferential in a separable Hilbert space. In particular, we consider an asymptotically periodic system, which means that time-dependent terms converge to time-periodic terms as ...
Noriaki Yamazaki
doaj  

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