Results 151 to 160 of about 560,829 (251)
Regularity Estimates for Fully Nonlinear Dead‐Core Problems With a Hamiltonian Term
Mathematische Nachrichten, Volume 299, Issue 11, Page 3243-3265, November 2026.ABSTRACT In this paper, we present a problem involving fully nonlinear elliptic operators with Hamiltonian, which can present a singularity or degenerate as the gradient approaches the origin. The model studied here, allows the appearance of plateau zones, i.e., unknown regions of the domain in which the non‐negative solutions vanishes.
Rafael R. Costa, Ginaldo S. Sá
wiley +1 more source
Optimal Control Applications and Methods, Volume 47, Issue 6, Page 1317-1328, November/December 2026.Computational governor is shown which simultaneously adjusts the reference and adjusts the constraints. ABSTRACT The paper considers a computational governor strategy to facilitate the implementation of Model Predictive Control (MPC) based on inexact optimization when the time available to compute the solution may be insufficient.
Steven van Leeuwen, Ilya Kolmanovsky
wiley +1 more source
Safeguarded Reinforcement Learning for Dynamic Environments
Optimal Control Applications and Methods, Volume 47, Issue 6, Page 1543-1555, November/December 2026.This paper uses a combination of Reinforcement Learning and Funnel Control to train a fast and safe controller for systems operating in changing environments. Furthermore, the presented formulation overcomes former limitations associated with the need for predefined reference trajectories.
Simon Gottschalk
wiley +1 more source
A Note on Local Polynomial Regression for Time Series in Banach Spaces
Journal of Time Series Analysis, Volume 47, Issue 6, Page 1124-1138, November 2026.ABSTRACT This work extends local polynomial regression to Banach space‐valued time series for estimating smoothly varying means and their derivatives in non‐stationary data. The asymptotic properties of both the standard and bias‐reduced Jackknife estimators are analyzed under mild moment conditions, establishing their convergence rates.
Florian Heinrichs
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The Haagerup property is not invariant under quasi‐isometry
Bulletin of the London Mathematical Society, Volume 58, Issue 11, November 2026.Abstract Using the work of Cornulier–Valette and Whyte (see Appendix A for the latter), we show that neither the Haagerup property nor weak amenability is invariant under quasi‐isometry of finitely generated groups. Appendix B shows, using the same examples, that the same holds for vanishing of the equivariant Lp$L^p$‐compression.
Mathieu Carette +4 more
wiley +1 more source
An existence result for hemivariational inequalities
Electronic Journal of Differential Equations, 2004 We present a general method for obtaining solutions for an abstract class of hemivariational inequalities. This result extends many results to the nonsmooth case. Our proof is based on a nonsmooth version of the Mountain Pass Theorem with Palais-Smale or
Zsuzsanna Dalyay, Csaba Varga
doaj
Sign Changing Critical Points for Locally Lipschitz Functionals [PDF]
In this paper, some existence results for sign-changing critical points of locally Lipschitz functionals in real Banach space are obtained by the method combining the invariant sets of descending ow method with a quantitative deformation. First we assume
Qin, Baoxia, Xu, Xian
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Solvability of the Neumann Problem for Elliptic Equations in Chord-Arc Domains with Very Big Pieces of Good Superdomains. [PDF]
Arch Ration Mech AnalMourgoglou M, Tolsa X.
europepmc +1 more source
A De Giorgi conjecture on the regularity of minimizers of Cartesian area in 1D. [PDF]
Ann Univ Ferrara Sez 7 Sci MatBellettini G, Kholmatov SY.
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Lipschitz functions with minimal Clarke subdifferential mappings
, 1996 In this paper we characterise, in terms of the upper Dini derivative, when the Clarke subdifferential mapping of a real-valued locally Lipschitz function is a minimal weak cusco.
Jonathan M. Borwein, Warren B. Moors
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