Results 31 to 40 of about 1,986,683 (337)

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

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

On Phi-Pseudo-Monotonicity and Approximation-Solvability of Nonlinear Equations

open access: yesJournal of Mathematical Analysis and Applications, 1991
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Verma, Ram, Debnath, Lokenath
openaire   +5 more sources

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

Parabolic Itô equations with monotone nonlinearities

open access: yesJournal of Functional Analysis, 1978
AbstractIn this paper the equation ut = Lu − F(u) + α(t, ω) is studied, where u(t) ϵ B0 a Banach space. L is an unbounded self-adjoint negative definite operator. F is a monotone nonlinear potential operator. α(t, ω) is a white noise process on B0. With suitable further restrictions on L and F it is proved that the equation has a unique solution. As t →
openaire   +1 more source

A Scaled Conjugate Gradient Method for Solving Monotone Nonlinear Equations with Convex Constraints

open access: yesJournal of Applied Mathematics, 2013
Based on the Scaled conjugate gradient (SCALCG) method presented by Andrei (2007) and the projection method presented by Solodov and Svaiter, we propose a SCALCG method for solving monotone nonlinear equations with convex constraints.
Sheng Wang, Hongbo Guan
doaj   +1 more source

Convergence of Monotone Generalized $\alpha$-nonexpansive Mappings in Ordered Hyperbolic Metric Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis
In this paper, we discuss SPK iterative algorithm for approximating fixed point of monotone generalized $\alpha$-nonexpansive mapping  in the setting of partially ordered hyperbolic spaces.
Samir Dashputre, Kavita Sakure
doaj   +1 more source

Penalized wavelet monotone regression [PDF]

open access: yes, 2007
In this paper we focus on nonparametric estimation of a constrained regression function using penalized wavelet regression techniques. This results into a convex op- timization problem under linear constraints.
Irène Gijbels   +5 more
core   +1 more source

An elliptic equation with no monotonicity condition on the nonlinearity [PDF]

open access: yesESAIM: Control, Optimisation and Calculus of Variations, 2006
Summary: An elliptic PDE is studied which is a perturbation of an autonomous equation. The existence of a nontrivial solution is proven via variational methods. The domain of the equation is unbounded, which imposes a lack of compactness on the variational problem. In addition, a popular monotonicity condition on the nonlinearity is not assumed.
openaire   +2 more sources

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