Results 21 to 30 of about 1,291,688 (320)

Chevron pattern equations: exponential attractor and global stabilization [PDF]

open access: greenVietnam Journal of Mathematics, 2021
The initial boundary value problem for a nonlinear system of equations modeling the chevron patterns is studied in one and two spatial dimensions. The existence of an exponential attractor and the stabilization of the zero steady state solution through application of a finite-dimensional feedback control is proved in two spatial dimensions.
Habiba Kalantarova   +2 more
openalex   +7 more sources

GLOBAL AND EXPONENTIAL ATTRACTORS FOR THE PENROSE–FIFE SYSTEM [PDF]

open access: greenMathematical Models and Methods in Applied Sciences, 2009
The Penrose–Fife system for phase transitions is addressed. Dirichlet boundary conditions for the temperature are assumed. Existence of global and exponential attractors is proved. Differently from preceding contributions, here the energy balance equation is both singular at 0 and degenerate at ∞.
Giulio Schimperna
openalex   +5 more sources

A construction of a robust family of exponential attractors [PDF]

open access: bronzeProceedings of the American Mathematical Society, 2005
Given a dissipative strongly continuous semigroup depending on some parameters, we construct a family of exponential attractors which is robust, in the sense of the symmetric Hausdorff distance, with respect to (even singular) perturbations.
Stefania Gatti   +3 more
openalex   +6 more sources

A robust family of exponential attractors for a time semi-discretization of the Ginzburg-Landau equation

open access: yesAIMS Mathematics, 2022
We consider a time semidiscretization of the Ginzburg-Landau equation by the backward Euler scheme. For each time step τ, we build an exponential attractor of the dynamical system associated to the scheme.
Narcisse Batangouna
doaj   +1 more source

Exponential approach to the hydrodynamic attractor in Yang-Mills kinetic theory [PDF]

open access: yesPhysical Review D, 2022
We use principal component analysis to study the hydrodynamic attractor in Yang-Mills kinetic theory undergoing the Bjorken expansion with Color Glass Condensate initial conditions.
Xiaojian Du   +3 more
semanticscholar   +1 more source

Data‐driven performance metrics for neural network learning

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary Effectiveness of data‐driven neural learning in terms of both local mimima trapping and convergence rate is addressed. Such issues are investigated in a case study involving the training of one‐hidden‐layer feedforward neural networks with the extended Kalman filter, which reduces the search for the optimal network parameters to a state ...
Angelo Alessandri   +2 more
wiley   +1 more source

Pullback exponential attractors for differential equations with delay

open access: yesDiscrete & Continuous Dynamical Systems - S, 2021
We show the existence of an exponential attractor for non-autono-mous dynamical system with bounded delay. We considered the case of strong dissipativity then prove that the result remains for the weak dissipativity. We conclude then the existence of the global attractor and ensure the boundedness of its fractal dimension.
Tarfia s   +4 more
openaire   +4 more sources

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