Results 31 to 40 of about 9,026,361 (324)

Non-existence of global transverse Poincaré sections [PDF]

Journal of Geometry and Physics, 2021
We study global transverse Poincar sections and give topological conditions for their existence, showing they never exist in many important cases. We prove that an energy hypersurface possessing global transverse Poincar section is equivalent to the hypersuface having a cosymplectic structure.
openaire   +2 more sources

Global existence for the p-Sobolev flow [PDF]

Journal of Differential Equations, 2021
arXiv admin note: text overlap with arXiv:2103 ...
Kuusi, Tuomo, Misawa, Masashi, Nakamura, Kenta   +2 more
openaire   +4 more sources

A sufficient condition for global existence of solutions to a generalized derivative nonlinear Schrödinger equation [PDF]

, 2016
We give a sufficient condition for global existence of the solutions to a generalized derivative nonlinear Schr\"{o}dinger equation (gDNLS) by a variational argument.
Noriyoshi Fukaya, M. Hayashi, Takahisa Inui   +2 more
semanticscholar   +1 more source

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

Advances 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

Existe realmente o aquecimento global?

Research, Society and Development, 2022
A influência da temperatura nos organismos é um dos aspectos essenciais para a regulação e manutenção da vida. Ao longo do tempo geológico a temperatura na Terra oscilou entre extremos, como consequência de fenômenos geológicos naturais. Porém, especialmente a partir do século XX, algumas atividades antrópicas estão alterando o clima, ocasionando ...
Roberto Valmorbida de Aguiar, Cláudia Petry, Altemir José Mossi, Morgana Karin Pierozan   +3 more
openaire   +2 more sources

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

Nonautonomous 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

Threshold Results for the Existence of Global and Blow-Up Solutions to a Time Fractional Diffusion System with a Nonlinear Memory Term in a Bounded Domain

Fractal and Fractional, 2023
In this paper, we consider a time fractional diffusion system with a nonlinear memory term in a bounded domain. We mainly prove some blow-up and global existence results for this problem. Moreover, we also give the decay estimates of the global solutions.
Quanguo Zhang, Yaning Li
doaj   +1 more source

Exponential Scattering for a Damped Hartree Equation

Fractal and Fractional, 2023
This note studies the linearly damped generalized Hartree equation iu˙−(−Δ)su+iau=±|u|p−2(Jγ∗|u|p)u ...
Talal Alharbi, Salah Boulaaras, Tarek Saanouni   +2 more
doaj   +1 more source

Local existence, global existence, and scattering for the nonlinear Schrödinger equation [PDF]

, 2016
In this paper, we construct for every α > 0 and λ ∈ ℂ a class of initial values u0 for which there exists a local solution of the nonlinear Schrodinger equation iut + Δu + λ|u|αu = 0 on ℝN with the initial condition u(0,x) = u0.
T. Cazenave, I. Naumkin
semanticscholar   +1 more source

Global existence for a nonlocal model for adhesive contact

, 2017
In this paper we address the analytical investigation of a model for adhesive contact, which includes nonlocal sources of damage on the contact surface, such as the elongation.
Bonetti, Elena, Bonfanti, Giovanna, Rossi, Riccarda   +2 more
core   +1 more source