Results 41 to 50 of about 1,264,456 (207)

On qualitative behavior of multiple solutions of quasilinear parabolic functional equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2020
We shall consider weak solutions of initial-boundary value problems for semilinear and nonlinear parabolic differential equations for $t\in (0,\infty )$ with certain nonlocal terms.
László Simon
doaj   +1 more source

Influence of Competitive C–P Segregation on Austenite Grain Growth in Iron Alloys

open access: yessteel research international, Volume 97, Issue 3, Page 1432-1443, March 2026.
This study investigates how carbon influences phosphorus‐induced solute drag effects during isothermal annealing of austenite grain growth in Fe–C–P alloys. Using in situ high‐temperature laser scanning confocal microscopy and density functional theory simulations, it demonstrates that carbon above a critical temperature significantly reduces P ...
Maximilian Kern   +4 more
wiley   +1 more source

Systems of Quasilinear Parabolic Equations with Discontinuous Coefficients and Continuous Delays

open access: yesAdvances in Difference Equations, 2011
This paper is concerned with a weakly coupled system of quasilinear parabolic equations where the coefficients are allowed to be discontinuous and the reaction functions may depend on continuous delays.
Tan Qi-Jian
doaj   +2 more sources

Convergence of quasilinear parabolic equations to semilinear equations

open access: yesDiscrete and Continuous Dynamical Systems - B, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bezerra, Flank D. M.   +2 more
openaire   +2 more sources

FinalKAN: A Dual‐Stream KAN Network Integrating Multisource Features for Radio Telescope Pointing Correction

open access: yesAdvances in Astronomy, Volume 2026, Issue 1, 2026.
This paper investigates the degradation of pointing accuracy in the Kunming 40‐m radio telescope due to long‐term equipment aging and environmental disturbances. Conventional linear pointing models are constrained by their linear modeling framework, making it difficult to accurately represent the nonlinear errors induced by temperature, wind speed, and
Yao He   +3 more
wiley   +1 more source

Interior derivative blow-up for quasilinear parabolic equations [PDF]

open access: yes, 1995
We give examples of bounded solutions whose gradient blow up in a finite time but it stays bounded on the boundary for a class of quasilinear parabolic equations with zero boundary data.
Giga, Y.
core   +1 more source

Global Sobolev Solutions of Quasilinear Parabolic Equations

open access: yesDifferential and Integral Equations, 1998
Global existence, uniqueness and a priori estimates of solutions to the initial and homogeneous Dirichlet boundary value problem for the equation \[ u_t - \sum _{i,j=1}^{n} a_{i,j}(\nabla u) \partial _i \partial _j u = f(x,t)\quad\text{on} \Omega \times (0,T) \] is proved in Sobolev spaces \(X_{s+2}(T)\) for sufficiently large \(s.\) Here \[ X_m(T) = \{
McLeod, Kevin, Milani, Albert
openaire   +3 more sources

Numerical Schemes Based on Splines for Two‐Dimensional Singularly Perturbed Elliptic Partial Differential Equations With Mixed Shifts

open access: yesInternational Journal of Differential Equations, Volume 2026, Issue 1, 2026.
In this study, we considered a singular perturbation problem of two‐dimensional, linear elliptic partial differential equations having both positive and negative shifts in both directions of the reaction terms, whose solution exhibits characteristic boundary layers.
Vivek K.   +2 more
wiley   +1 more source

Critical Fujita exponents for a class of quasilinear coupled parabolic  equations

open access: yesElectronic Journal of Differential Equations
This article concerns the critical Fujita exponents for a class  of quasilinear coupled parabolic equations.  Using energy estimates, suitable supersolutions, and the comparison  principle, the blow-up theorem of Fujita type is established,  and the ...
Yuanyuan Nie   +3 more
doaj   +3 more sources

Quantitative Nonlocal‐to‐Local Limits in Multispecies Interaction Systems via Relative Entropy and Modulated Energy

open access: yesJournal of Applied Mathematics, Volume 2026, Issue 1, 2026.
We derive quantitative convergence rates for nonlocal‐to‐local limits in a class of multispecies interaction systems with finite‐range kernels. The nonlocal model consists of coupled aggregation–diffusion equations in which intra‐ and interspecies interactions are mediated by short‐range convolution operators.
S. C. Oukouomi Noutchie, John Venetis
wiley   +1 more source

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