Results 61 to 70 of about 814 (188)
Modeling the Impact of Double‐Dose Vaccination and Saturated Transmission Dynamics on Mpox Control
Engineering Reports, Volume 7, Issue 5, May 2025.The dynamics of the monkeypox disease in the population. ABSTRACT This study constructs a compartmental model that incorporates the dynamics of implementing a double‐dose vaccination for the Mpox disease. The study further explores the pattern of saturated transmission dynamics of the Mpox disease.
Fredrick Asenso Wireko +5 more
wiley +1 more source
Ulam-Hyers stability of a parabolic partial differential equation
Demonstratio Mathematica, 2019 The goal of this paper is to give an Ulam-Hyers stability result for a parabolic partial differential equation. Here we present two types of Ulam stability: Ulam-Hyers stability and generalized Ulam-Hyers-Rassias stability.
Marian Daniela +2 more
doaj +1 more source
On the Hyers–Ulam–Rassias Stability of Approximately Additive Mappings
Journal of Mathematical Analysis and Applications, 1996 The article contains another generalization of the classical Hyers solution to the Ulam problem on approximately additive mappings. The author vaguely indicates independent proves of his result in the articles by P. Găvrută with coathors.
openaire +2 more sources
A generalization of the Hyers–Ulam–Rassias stability of the Pexiderized quadratic equations
Journal of Mathematical Analysis and Applications, 2004 Two Pexiderized versions of the quadratic functional equation are considered: \[ \begin{aligned} f(x\ast y)+f(x\ast y^{-1})&=2g(x)+2g(y),\\ f(x\ast y)+g(x\ast y^{-1})&=2h(x)+2k(y), \end{aligned} \] where \(f,g,h,k\) are functions mapping a group \((G,\ast)\) into a~real or complex topological vector space~\(X\).
Yang-Hi Lee, Kil-Woung Jun
openaire +3 more sources
Journal of Applied Mathematics, Volume 2025, Issue 1, 2025.Water contamination is a crucial area of study that has drawn significant attention from researchers and environmentalists due to its profound impact on humans, animals, and plants. It is equally harmful as air and soil contamination and is closely linked to both.
Pasquini Fotsing Soh +4 more
wiley +1 more source
Journal of Mathematics, 2023 This paper aims to study the existence and uniqueness of the solution for nonlocal multiorder implicit differential equation involving Hilfer fractional derivative on unbounded domains a,∞,a≥0, in an applicable Banach space by utilizing the Banach ...
Sabri T. M. Thabet, Imed Kedim
doaj +1 more source
HYERS-ULAM-RASSIAS STABILITY OF A CUBIC FUNCTIONAL EQUATION [PDF]
Bulletin of the Korean Mathematical Society, 2007 In this paper, we will find out the general solution and investigate the generalized Hyers-Ulam-Rassias stability problem for the following cubic functional equation 3f(x+3y)+f(3x-y)=15f(x+y)+15f(x-y)+80f(y). The concept of Hyers-Ulam-Rassias stability originated from Th. M. Rassias# stability theorem that appeared in his paper: On the stability of the
openaire +2 more sources
Estimation of Inexact Multimixed Additive‐Quadratic Mappings in Fuzzy Normed Spaces
Journal of Mathematics, Volume 2025, Issue 1, 2025.In the current study, we introduce a new model of multimixed additive‐quadratic mapping and then show that the system of several mixed additive‐quadratic equations defining a multimixed additive‐quadratic mapping can be unified and presented as a single equation. We also show that such mappings under some conditions are multi‐additive, multi‐quadratic,
Abasalt Bodaghi, Pramita Mishra
wiley +1 more source
On stability for nonlinear implicit fractional differential equations
Le Matematiche, 2015 The purpose of this paper is to establish some types of Ulam stability: Ulam-Hyers stability, generalized Ulam-Hyers stability, Ulam-Hyers-Rassias stability and generalized Ulam-Hyers-Rassias stability for a class of implicit fractional-order ...
Mouffak Benchohra, Jamal E. Lazreg
doaj
Journal of Mathematics, Volume 2025, Issue 1, 2025.This paper focuses on investigating the existence, uniqueness, and stability of Ulam–Hyers (U‐H) and generalized Ulam–Hyers (G‐U‐H) solutions for the generalized Langevin–Sturm–Liouville equation, which involves generalized Liouville–Caputo derivatives and antiperiodic boundary conditions. We can divide this manuscript into six parts. The first section
Muthaiah Subramanian +3 more
wiley +1 more source