Results 11 to 20 of about 451,720 (336)

Viscosity Solution [PDF]

open access: yes, 2014
Viscosity solution is a notion of weak solution for a class of partial differential equations of Hamilton-Jacobi type. The range of applications of the notions of viscosity solution and Hamilton-Jacobi equations is enormous, including common class of partial differential equations such as evolutive problems and problems with boundary conditions ...
Camilli, Fabio, Prados, Emmanuel
openaire   +3 more sources

Exact non-equilibrium solutions of the Einstein-Boltzmann equations. II [PDF]

open access: yes, 1996
We find exact solutions of the Einstein-Boltzmann equations with relaxational collision term in FRW and Bianchi I spacetimes. The kinematic and thermodynamic properties of the solutions are investigated.
Anderson J L   +16 more
core   +2 more sources

Parabolic Minkowski convolutions of viscosity solutions to fully nonlinear equations [PDF]

open access: yes, 2019
This paper is concerned with the Minkowski convolution of viscosity solutions of fully nonlinear parabolic equations. We adopt this convolution to compare viscosity solutions of initial-boundary value problems in different domains.
Ishige, Kazuhiro   +2 more
core   +2 more sources

Unbounded Viscosity Solutions of Hybrid Control Systems [PDF]

open access: yes, 2008
We study a hybrid control system in which both discrete and continuous controls are involved. The discrete controls act on the system at a given set interface.
Barles, Guy   +2 more
core   +5 more sources

Viscosity solutions to degenerate Complex Monge-Amp\`ere equations [PDF]

open access: yes, 2010
We develop an alternative approach to Degenerate complex Monge-Amp\`ere equations on compact K\"ahler manifolds based on the concept of viscosity solutions and compare systematically viscosity concepts with pluripotential theoretic ones. We generalize to
Alexandrov   +34 more
core   +6 more sources

Balanced-Viscosity solutions for multi-rate systems [PDF]

open access: yes, 2014
Several mechanical systems are modeled by the static momentum balance for the displacement $u$ coupled with a rate-independent flow rule for some internal variable $z$. We consider a class of abstract systems of ODEs which have the same structure, albeit
Mielke, Alexander   +2 more
core   +3 more sources

The Gelfand problem for the 1-homogeneous p-Laplacian

open access: yesAdvances in Nonlinear Analysis, 2017
In this paper, we study the existence of viscosity solutions to the Gelfand problem for the 1-homogeneous p-Laplacian in a bounded domain Ω⊂ℝN{\Omega\subset\mathbb{R}^{N}}, that is, we deal ...
Carmona Tapia José   +2 more
doaj   +1 more source

Factors influencing rheological properties of plugging agent particle solutions

open access: yesYouqi dizhi yu caishoulu, 2023
The effect of the thermal composite fluid remaining in the reservoirs on the rheological properties of the plugging agent particle solution is still unclear at the late thermal composite development stage of the heavy oil reservoirs. Therefore, it limits
WANG Wuchao   +5 more
doaj   +1 more source

Optimal Exploitation of a General Renewable Natural Resource under State and Delay Constraints

open access: yesMathematics, 2020
In this work, we study an optimization problem arising in the management of a natural resource over an infinite time horizon. The resource is assumed to evolve according to a logistic stochastic differential equation.
M’hamed Gaïgi   +2 more
doaj   +1 more source

Perturbation Solutions For Magnetohydrodynamics (Mhd) Flow of in a Non-Newtonian Fluid Between Concentric Cylinders

open access: yesInternational Journal of Applied Mechanics and Engineering, 2019
The steady-state magnetohydrodynamics (MHD) flow of a third-grade fluid with a variable viscosity parameter between concentric cylinders (annular pipe) with heat transfer is examined.
M. Yürüsoy, Ö.F. Güler
doaj   +1 more source

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