Results 51 to 60 of about 1,325,975 (331)

Free boundary problems via Sakai’s theorem

open access: yesSt. Petersburg Mathematical Journal, 2023
A Schwarz function on an open domain Ω \Omega is a holomorphic function satisfying S ( ζ ) = ζ ¯ S(\zeta )=\overline {\zeta } on Γ \Gamma , which is part of the boundary of Ω \Omega .
Vardakis, D., Volberg, A.
openaire   +2 more sources

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

Stability of Solutions to a Free Boundary Problem for Tumor Growth

open access: yesInternational Journal of Differential Equations, 2014
We study the asymptotic behaviour of quasi-stationary solutions of a free boundary problem which had been discussed by Bueno (2005). Using a simpler method we prove that the quasi-steady solutions of the problem converge uniformly to the unique ...
Shihe Xu
doaj   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

Self-similar solutions of a multi-phase Stefan problem on the half-line

open access: yesСовременная математика: Фундаментальные направления
In this paper, we study self-similar solutions of the multiphase Stefan problem for the heat equation on the half-line x 0 with constant initial data and Dirichlet or Neumann boundary conditions. In the case of the Dirichlet boundary condition, we prove
E. Yu. Panov
doaj   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti   +11 more
wiley   +1 more source

Boundary monotonicity formulae and applications to free boundary problems I: The elliptic case

open access: yesElectronic Journal of Differential Equations, 2004
We derive a monotonicity formula at boundary points for a class of nonlinear elliptic partial differential equations, including the obstacle problem case, quenching, a free boundary problem with Bernoulli-type free boundary condition as well as the blow ...
Georg S. Weiss
doaj  

Existence of periodic solution to one dimensional free boundary problems for adsorption phenomena [PDF]

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2018
In this paper we consider a drying and wetting process in porous medium to create a mathematical model for concrete carbonation. The process is assumed to be characterized by the growth of the air zone and a diffusion of moisture in the air zone.
T. Aiki, N. Sato
doaj   +1 more source

Inverse free boundary problems

open access: yesApplied Mathematics Letters, 1989
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Doví V, Preisig H, PALADINO, OMBRETTA
openaire   +2 more sources

A Free Boundary Problem with Facets [PDF]

open access: yesArchive for Rational Mechanics and Analysis, 2018
38 pages, 2 ...
William M. Feldman, Charles K. Smart
openaire   +3 more sources

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