Results 31 to 40 of about 1,611,247 (187)

Dynamical systems method for solving operator equations

open access: yes, 2003
Consider an operator equation $F(u)=0$ in a real Hilbert space. The problem of solving this equation is ill-posed if the operator $F'(u)$ is not boundedly invertible, and well-posed otherwise.
A.G Ramm   +18 more
core   +3 more sources

Exact form of the exponential Foldy-Wouthuysen transformation operator for an arbitrary-spin particle

open access: yes, 2016
The exact exponential Foldy-Wouthuysen transformation operator applicable for a particle with an arbitrary spin is derived. It can be successfully utilized for verifying any Foldy-Wouthuysen transformation method based on the exponential operator. When a
Silenko, Alexander J.
core   +1 more source

High-Precision Satellite Video Stabilization Method Based on ED-RANSAC Operator

open access: yesRemote Sensing, 2023
Video image stabilization technology is a crucial foundation for applications such as video image target identification, monitoring, and tracking. Satellite video covers a wide range of areas with complex and similar types of objects on the ground and ...
Feida Zhang   +6 more
doaj   +1 more source

N-FRACTIONAL CALCULUS OPERATOR METHOD TO THE EULER EQUATION

open access: yesПроблемы анализа, 2018
We can obtain the explicit solutions of the Euler equation by using the fractional calculus methods. So, we apply the N operator method in the fractional calculus to solve this equation in this paper.
R. Yilmazer, O. Ozturk
doaj   +1 more source

Nonequilibrium statistical operator method in the Renyi statistics

open access: yes, 2010
The generalization of the Zubarev nonequilibrium statistical operator method for the case of Renyi statistics is proposed when the relevant statistical operator (or distribution function) is obtained based on the principle of maximum for the Renyi ...
Abe   +47 more
core   +1 more source

Heat Kernel Expansion for Operators of the Type of the Square Root of the Laplace Operator [PDF]

open access: yes, 1996
A method is suggested for the calculation of the DeWitt-Seeley-Gilkey (DWSG) coefficients for the operator $\sqrt{-\nabla^2 + V(x)}$ basing on a generalization of the pseudodifferential operator technique.
Gorbar, E. V.
core   +2 more sources

From nucleon-nucleon interaction matrix elements in momentum space to an operator representation

open access: yes, 2014
Starting from the matrix elements of the nucleon-nucleon interaction in momentum space we present a method to derive an operator representation with a minimal set of operators that is required to provide an optimal description of the partial waves with ...
Feldmeier, H.   +3 more
core   +1 more source

Regularization method for parabolic equation with variable operator

open access: yesJournal of Applied Mathematics, 2005
Consider the initial boundary value problem for the equation ut=−L(t)u, u(1)=w on an interval [0,1] for t>0, where w(x) is a given function in L2(Ω) and Ω is a bounded domain in ℝn with a smooth boundary ∂Ω.
Valentina Burmistrova
doaj   +1 more source

Pythagorean Fuzzy Bonferroni Mean with Weighted Interaction Operator and Its Application in Fusion of Online Multidimensional Ratings

open access: yesInternational Journal of Computational Intelligence Systems, 2022
Aiming at the aggregation problem of online multi-attribute interactive ratings, a decision-making method based on Pythagorean Fuzzy Bonferroni mean with weighted interaction (PFWIBM) operator is developed by mining the advantages of ratings driven ...
Yi Yang   +4 more
doaj   +1 more source

Numerical Methods for the Fractional Laplacian: a Finite Difference-quadrature Approach

open access: yes, 2014
The fractional Laplacian $(-\Delta)^{\alpha/2}$ is a non-local operator which depends on the parameter $\alpha$ and recovers the usual Laplacian as $\alpha \to 2$.
Huang, Yanghong, Oberman, Adam
core   +1 more source

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