Results 41 to 50 of about 7,097,033 (76)

Contraction‐Type Fixed‐Point Theorem for Bivariate/Multivariate Self‐Mappings in Fuzzy Banach Spaces and Hyers–Ulam Stability of Multivariate Functional Equations

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
To address the lack of dedicated tools for analyzing the stability of bivariate functional equations in fuzzy environments, this paper investigates fixed‐point theory and functional equation stability in fuzzy Banach spaces (FBSs). First, building on the Bag–Samanta fuzzy norm, we supplement and prove the “proposition on convergence preservation of ...
Gang Lyu   +4 more
wiley   +1 more source

Gradient Crystal Plasticity Modeling of Laminate Microstructures

open access: yesGAMM-Mitteilungen, Volume 48, Issue 4, November 2025.
Abstract Metallic materials may show an ultra‐fine lamellar morphology leading to desirable macroscopic mechanical properties. In this paper, an analytical method for modeling the size‐dependent mechanical behavior of material systems with lamellar microstructure is proposed.
Claudius Klein, Thomas Böhlke
wiley   +1 more source

A Flexible Derivation Approach for the Numerical Solution of Partial Differential Equations

open access: yesNumerical Methods for Partial Differential Equations, Volume 41, Issue 6, November 2025.
ABSTRACT We propose a new method for the numerical solution of boundary value problems associated to partial differential equations. This method is based on standard approximation techniques, like numerical differentiation of univariate functions and curve interpolation, so it can be easily generalized to high‐dimensional problems.
Nadaniela Egidi   +2 more
wiley   +1 more source

Operational quantities characterizing semi-Fredholm operators [PDF]

open access: yes, 1995
Several operational quantities have appeared in the literature characterizing upper semi-Fredholm operators. Here we show that these quantities can be divided into three classes, in such a way that two of them are equivalent if they belong to the same ...
Martinón, Antonio, González, Manuel
core  

Physically Based Feature Augmentation to Improve Classification Algorithm Performance

open access: yesEngineering Reports, Volume 7, Issue 10, October 2025.
Physical transformations of infrared remote sensing measurements are shown to improve classification performance. Physical transformations are more effective than those that are simply mathematical. Leveraging physical insight is broadly applicable to many types of problems and can lead to fewer measurements/simpler models for desired performance ...
Charles E. Davidson   +2 more
wiley   +1 more source

The generalized Fredholm operators

open access: yes, 1976
Let X, Y be Banach spaces over either the real field or the complex field. A continuous linear operator will be called a generalized Fredholm operator if T ( X ) T(X) is closed in Y, and Ker T and Coker T ...
Kung Wei Yang
core   +1 more source

On cellular indecomposable property of semi-Fredholm operators [PDF]

open access: yes, 2012
In this paper we prove that an operator with the cellular indecomposable property has no singular points in the semi-Fredholm domain. Besides its own interests, this fills a gap in [3].
Cheng, Guozheng, Fang, Xiang
core   +1 more source

On the Choice of Basis Functions for Modeling Earth's Elastic Deformation Due To Surface Loading

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract Accurately modeling Earth's elastic deformation due to surface loads is essential for geodetic and geophysical studies, including investigations of climate change, hydrology, and tectonics. Various basis functions, such as spherical harmonics, Green's functions, disk functions, and Slepian functions, are commonly used to describe the ...
Fan Yang   +3 more
wiley   +1 more source

A construction of semi-infinite de Rham cohomology [PDF]

open access: yes
The purpose of this thesis is to describe a construction of semi-infinite de Rham cohomology for infinite dimensional manifolds equipped with the extra structure of a polarisation.
Stacey, Andrew Edgell
core  

Stability Analysis of Slope Subjected to Seepage Forces Considering Spatial Variability of Soil Properties

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, Volume 49, Issue 11, Page 2459-2491, 10 August 2025.
ABSTRACT The stability analysis of a saturated soil slope subjected to seepage flow generated by rapid water level drawdown is investigated in this paper by means of the limit analysis kinematic approach. The analysis takes into account the inherent spatial variability of soil strength and permeability properties.
Mário Vargas Ceron   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy