Results 21 to 30 of about 54,219 (283)

Nonlinear Dirac Equations, Monotonicity Formulas and Liouville Theorems [PDF]

open access: yesCommunications in Mathematical Physics, 2019
Abstract We study the qualitative behavior of nonlinear Dirac equations arising in quantum field theory on complete Riemannian manifolds. In particular, we derive monotonicity formulas and Liouville theorems for solutions of these equations. Finally, we extend our analysis to Dirac-harmonic maps with curvature term.
openaire   +6 more sources

A Maximal Inequality for $p$th Power of Stochastic Convolution Integrals [PDF]

open access: yes, 2015
An inequality for the $p$th power of the norm of a stochastic convolution integral in a Hilbert space is proved. The inequality is stronger than analogues inequalities in the Literature in the sense that it is pathwise and not in expectation.
Salavati, Erfan, Zangeneh, Bijan Z.
core   +3 more sources

A New Conjugate Gradient Projection Method for Convex Constrained Nonlinear Equations

open access: yesComplexity, 2020
The conjugate gradient projection method is one of the most effective methods for solving large-scale monotone nonlinear equations with convex constraints.
Pengjie Liu, Jinbao Jian, Xianzhen Jiang
doaj   +1 more source

Entropy Solution Theory for Fractional Degenerate Convection-Diffusion Equations [PDF]

open access: yes, 2010
We study a class of degenerate convection diffusion equations with a fractional nonlinear diffusion term. These equations are natural generalizations of anomalous diffusion equations, fractional conservations laws, local convection diffusion equations ...
Alibaud   +38 more
core   +2 more sources

Nonlinear equations with weighted potential type operators in Lebesgue spaces

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
By method of monotone operators, existence and uniqueness theorems are proved for some classes of nonlinear equations with weighted potential type operators in Lebesgue spaces.
S. N. Askhabov
doaj   +3 more sources

A Modified Conjugate Descent Projection Method for Monotone Nonlinear Equations and Image Restoration

open access: yesIEEE Access, 2020
In this article, we propose a modified conjugate descent (CD) projection algorithm for solving system of nonlinear monotone equations with convex constraints.
Sani Aji   +4 more
doaj   +1 more source

On the Convergence of Finite Element Methods for Hamilton-Jacobi-Bellman Equations [PDF]

open access: yes, 2011
In this note we study the convergence of monotone P1 finite element methods on unstructured meshes for fully non-linear Hamilton-Jacobi-Bellman equations arising from stochastic optimal control problems with possibly degenerate, isotropic diffusions ...
Jensen, Max, Smears, Iain
core   +2 more sources

The Solutions of Mixed Monotone Fredholm-Type Integral Equations in Banach Spaces

open access: yesDiscrete Dynamics in Nature and Society, 2013
By introducing new definitions of ϕ convex and -φ concave quasioperator and v0 quasilower and u0 quasiupper, by means of the monotone iterative techniques without any compactness conditions, we obtain the iterative unique solution of nonlinear mixed ...
Hua Su
doaj   +1 more source

A modified three-term of Dai–Yuan type derivative-free algorithm for nonlinear monotone equations with signal recovery problems

open access: yesFranklin Open
A lot of researchers have introduced iterative schemes for solving convex constrained nonlinear monotone equations. This paper aims to propose a modified three-term of Dai–Yuan type (TTDY) derivative-free algorithm for nonlinear monotone equations.
Aliyu Yusuf   +3 more
doaj   +1 more source

Inertial-Based Derivative-Free Method for System of Monotone Nonlinear Equations and Application

open access: yesIEEE Access, 2020
Iterative methods for solving nonlinear problems are of great importance due to their appearance in various areas of applications. In this paper, based on the inertial effect, we propose two projection derivative-free iterative methods for solving system
Aliyu Muhammed Awwal   +4 more
doaj   +1 more source

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