Results 21 to 30 of about 7,959,436 (371)

Global existence and stability for the modified Mullins–Sekerka and surface diffusion flow

open access: yesMathematics in Engineering, 2022
In this survey we present the state of the art about the asymptotic behavior and stability of the modified Mullins–Sekerka flow and the surface diffusion flow of smooth sets, mainly due to E. Acerbi, N. Fusco, V. Julin and M. Morini.
Serena Della Corte   +2 more
doaj   +1 more source

Global existence and dynamic structure of solutions for damped wave equation involving the fractional Laplacian

open access: yesDemonstratio Mathematica, 2021
We consider strong damped wave equation involving the fractional Laplacian with nonlinear source. The results of global solution under necessary conditions on the critical exponent are established.
Bidi Younes   +3 more
doaj   +1 more source

ON THE GLOBAL EXISTENCE OF TIME [PDF]

open access: yesInternational Journal of Modern Physics D, 2009
The global existence of time is often taken for granted but should instead be considered for investigation. Using the tools of global Lorentzian geometry the author shows that, under physically reasonable conditions, the impossibility of finding a global time implies the singularity of space–time.
openaire   +6 more sources

Optimal version of the Picard–Lindelöf theorem

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
Consider the differential equation $y'=F(x,y)$. We determine the weakest possible upper bound on $|F(x,y)-F(x,z)|$ which guarantees that this equation has for all initial values a unique solution, which exists globally.
Jan-Christoph Schlage-Puchta
doaj   +1 more source

The derivative NLS equation: global existence with solitons [PDF]

open access: yes, 2017
We extend the global existence result for the derivative NLS equation to the case when the initial datum includes a finite number of solitons. This is achieved by an application of the B\"{a}cklund transformation that removes a finite number of zeros of ...
Yusuke Shimabukuro   +2 more
semanticscholar   +1 more source

Global existence of solutions to some semilinear integro-differential evolution equations with sign-varying kernels

open access: yesNonautonomous Dynamical Systems, 2020
In this paper, we study the global existence of solutions to some semilinear integro-differential evolution equations in Hilbert spaces with sign-varying kernels.
Jin Kun-Peng, Liang Jin, Xiao Ti-Jun
doaj   +1 more source

Global Existence Analysis of Cross-Diffusion Population Systems for Multiple Species [PDF]

open access: yes, 2016
The existence of global-in-time weak solutions to reaction-cross-diffusion systems for an arbitrary number of competing population species is proved. The equations can be derived from an on-lattice random-walk model with general transition rates.
Xiuqing Chen, Esther S. Daus, A. Jüngel
semanticscholar   +1 more source

On the global existence for the Muskat problem

open access: yesJournal of the European Mathematical Society, 2012
The Muskat problem models the dynamics of the interface between two incompressible immiscible fluids with different constant densities. In this work we prove three results. First we prove an L^2(\mathbb R) maximum principle, in the form of a new "log'' conservation law which is ...
D. Cordoba   +3 more
openaire   +4 more sources

Global existence and blow-up of weak solutions for a class of fractional p-Laplacian evolution equations

open access: yesAdvances in Nonlinear Analysis, 2020
In this paper, we study the fractional p-Laplacian evolution equation with arbitrary initial energy,
Liao Menglan, Liu Qiang, Ye Hailong
doaj   +1 more source

Decay estimate and non-extinction of solutions of p-Laplacian nonlocal heat equations

open access: yesAIMS Mathematics, 2020
The main goal of this work is to study the initial boundary value problem of a nonlocal heat equations with logarithmic nonlinearity in a bounded domain. By using the logarithmic Sobolev inequality and potential wells method, we obtain the decay, blow-up
Sarra Toualbia   +2 more
doaj   +1 more source

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