Results 51 to 60 of about 1,611,247 (187)

A new convergent algorithm to approximate potentials from fixed angle scattering data

, 2018
We introduce a new iterative method to recover a real compact supported potential of the Schr\"odinger operator from their fixed angle scattering data. The method combines a fixed point argument with a suitable approximation of the resolvent of the Schr\"
Barceló, Juan A., Castro, Carlos, Luque, Teresa, Vilela, Mari Cruz   +3 more
core   +1 more source

Higher Order Nonlocal Operator Method

, 2023
We extend the nonlocal operator method to higher order scheme by using a higher order Taylor series expansion of the unknown field. Such a higher order scheme improves the original nonlocal operator method proposed by the authors in [A nonlocal operator method for solving partial differential equations], which can only achieve one-order convergence ...
Ren, Huilong, Zhuang, Xiaoying, Rabczuk, Timon   +2 more
openaire   +2 more sources

Projection solutions of Frobenius-Perron operator equations

International Journal of Mathematics and Mathematical Sciences, 1993
We construct in this paper the first order and second order piecewise polynomial finite approximation schemes for the computation of invariant measures of a class of nonsingular measurable transformations on the unit interval of the real axis.
Jiu Ding, Tien Tien Li
doaj   +1 more source

The Q-operator and Functional Relations of the Eight-vertex Model at Root-of-unity $\eta = \frac{2m K}{N}$ for odd N

, 2007
Following Baxter's method of producing Q_{72}-operator, we construct the Q-operator of the root-of-unity eight-vertex model for the crossing parameter $\eta = \frac{2m K}{N}$ with odd $N$ where Q_{72} does not exist.
Albertini G, Baxter R J, Date E, Deguchi T, Deguchi T, Fabricius K, Fabricius K, Fabricius K, Fabricius K, Fabricius K McCoy B M, Roan S S, Roan S S, Roan S S, Roan S S, Roan S S, Shi-shyr Roan, Takhtadzhan L A   +16 more
core   +1 more source

A Multi-Criteria Decision-Making Method Based on the Improved Single-Valued Neutrosophic Weighted Geometric Operator

Mathematics, 2020
The aggregation operator is one of the most common techniques to solve multi-criteria decision-making (MCDM) problems. The aim of this paper is to propose an MCDM method based on the improved single-valued neutrosophic weighted geometric (ISVNWG ...
Chao Tian, Juan Juan Peng
doaj   +1 more source

Fourier Method for Approximating Eigenvalues of Indefinite Stekloff Operator

, 2017
We introduce an efficient method for computing the Stekloff eigenvalues associated with the Helmholtz equation. In general, this eigenvalue problem requires solving the Helmholtz equation with Dirichlet and/or Neumann boundary condition repeatedly.
A Brandt, A.H. Sheikh, B Engquist, CC Stolk, D Colton, D Lahaye, D Osei-Kuffuor, F. Cakoni, Fioralba Cakoni, GH Golub, HC Elman, JW Cooley, L Zepeda-Núnez, M Eslaminia, M. J. Gander, OG Ernst, Z Chen   +16 more
core   +1 more source

The nonlocal multipoint problem with Dirichlet-type conditions for an ordinary differential equation of even order with involution

Математичні Студії, 2020
The spectral properties of the nonself-adjoint problem with multipoint perturbations of the Dirichlet conditions for differential operator of order $2n$ with involution are investigated. The system of eigenfunctions of a multipoint problem is constructed.
Ya.O. Baranetskij, P.I. Kalenyuk, M. I. Kopach, A.V. Solomko   +3 more
doaj   +1 more source

Convergence Analysis for System of Cayley Generalized Variational Inclusion on q-Uniformly Banach Space

Axioms
This paper is devoted to the analysis of a system of generalized variational inclusion problems involving α-averaged and Cayley operators within the framework of a q-uniformly smooth Banach space. We demonstrate that the problem can be reformulated as an
Mohd Falahat Khan, Syed Shakaib Irfan, Iqbal Ahmad   +2 more
doaj   +1 more source

A Multi-Attribute Decision-Making Algorithm Using Q-Rung Orthopair Power Bonferroni Mean Operator and Its Application

Mathematics, 2020
The process of decision-making is subject to various influence factors and environmental uncertainties, which makes decision become a very complex task. As a new type of decision processing tool, the q-rung orthopair fuzzy sets can effectively deal with ...
Ping He, Zaoli Yang, Bowen Hou
doaj   +1 more source

Extension of hesitant fuzzy weight geometric (HFWG)-VIKOR method under hesitant fuzzy information

Journal of Nigerian Society of Physical Sciences
The hesitant fuzzy set (HFS) is an innovative approach to decision-making under uncertainty. This work is primarily concerned with the HFS decision matrix’s aggregated operation.
Rafiraza raza, Ahmad Termimi Ab Ghani, Lazim Abdullah   +2 more
doaj   +1 more source