Results 61 to 70 of about 7,959,436 (371)
Global existence for nonlinear operator inclusions
Computers & Mathematics with Applications, 1999 AbstractWe use fixed-point theory for multivalued maps to obtain general existence principles for nonlinear operator inclusions. Our maps are either of upper semicontinuous or lower semicontinuous type.
Agarwal, R.P., O'Regan, D.
openaire +3 more sources
MathematicsThe nonlinear wave equation with acoustic and fractional boundary conditions, coupled with logarithmic source and delay terms, is significant for its ability to model complex systems, its contribution to the advancement of mathematical theory, and its ...
Abdelbaki Choucha +4 more
doaj +1 more source
Blow-up analysis for a doubly nonlinear parabolic system with multi-coupled nonlinearities
Electronic Journal of Qualitative Theory of Differential Equations, 2012 This paper deals with the global existence and the global nonexistence of a doubly nonlinear parabolic system coupled via both nonlinear reaction terms and nonlinear boundary flux.
Jian Wang, Yanyan Ge
doaj +1 more source
Convergence for global curve diffusion flows
Mathematics in Engineering, 2022 In this note we establish exponentially fast smooth convergence for global curve diffusion flows, and discuss open problems relating embeddedness to global existence (Giga's conjecture) and the shape of Type I singularities (Chou's conjecture).
Glen Wheeler
doaj +1 more source
Global existence for the derivative nonlinear Schrödinger equation by the method of inverse scattering [PDF]
, 2015 We develop inverse scattering for the derivative nonlinear Schrödinger equation (DNLS) on the line using its gauge equivalence with a related nonlinear dispersive equation.
Jiaqi Liu, P. Perry, C. Sulem
semanticscholar +1 more source
Kirchhoff equations in generalized Gevrey spaces: local existence, global existence, uniqueness [PDF]
, 2009 In this note we present some recent results for Kirchhoff equations in generalized Gevrey spaces. We show that these spaces are the natural framework where classical results can be unified and extended.
Ghisi, Marina, Gobbino, Massimo
core +2 more sources
Effects of chronic browsing on life‐history traits of an irruptive large herbivore population
Population Ecology, EarlyView.This study aimed to determine the relationship between diet quality, body mass, and size (hind foot length), and female reproduction and sought to identify the mechanism by which high density under severe food limitations is maintained. Our results demonstrated that sika deer introduced to Nakanoshima Island have maintained high densities through high ...
Koichi Kaji +9 more
wiley +1 more source
The Second Critical Exponent for a Time-Fractional Reaction-Diffusion Equation
MathematicsIn this paper, we consider the Cauchy problem of a time-fractional nonlinear diffusion equation. According to Kaplan’s first eigenvalue method, we first prove the blow-up of the solutions in finite time under some sufficient conditions.
Takefumi Igarashi
doaj +1 more source
Population Ecology, EarlyView.This study examines the demographic dynamics of two seabird populations on Tromelin Island, 15 years after the eradication of brown rats. The results indicate that these populations are in good health and are expected to continue growing until breeding sites are saturated in about a century.
Merlène Saunier +6 more
wiley +1 more source
Global well-posedness of a class of fourth-order strongly damped nonlinear wave equations [PDF]
Opuscula Mathematica, 2019 Global well-posedness and finite time blow up issues for some strongly damped nonlinear wave equation are investigated in the present paper. For subcritical initial energy by employing the concavity method we show a finite time blow up result of the ...
Yang Yanbing +3 more
doaj +1 more source