Results 31 to 40 of about 3,007,544 (224)

Hyers–Ulam Stability for Differential Systems with $$2\times 2$$ 2 × 2 Constant Coefficient Matrix [PDF]

open access: yesResults in Mathematics, 2022
We explore the Hyers–Ulam stability of perturbations for a homogeneous linear differential system with $$2\times 2$$ 2 × 2 constant coefficient matrix. New necessary and sufficient conditions for the linear system to be Hyers–Ulam stable are proven, and ...
D. Anderson, M. Onitsuka
semanticscholar   +1 more source

Ulam-type stability for a class of implicit fractional differential equations with non-instantaneous integral impulses and boundary condition

open access: yesAdvances in Difference Equations, 2017
In this paper, we investigate four different types of Ulam stability, i.e., Ulam-Hyers stability, generalized Ulam-Hyers stability, Ulam-Hyers-Rassias stability and generalized Ulam-Hyers-Rassias stability for a class of nonlinear implicit fractional ...
Akbar Zada, Sartaj Ali, Yongjin Li
doaj   +1 more source

Practical Ulam-Hyers-Rassias stability for nonlinear equations [PDF]

open access: yesMathematica Bohemica, 2017
In this paper, we offer a new stability concept, practical Ulam-Hyers-Rassias stability, for nonlinear equations in Banach spaces, which consists in a restriction of Ulam-Hyers-Rassias stability to bounded subsets.
Jin Rong Wang, Michal Fečkan
doaj   +1 more source

Periodic solutions and Hyers-Ulam stability of atmospheric Ekman flows

open access: yesDiscrete and Continuous Dynamical Systems. Series A, 2021
In this paper, we study the classical problem of the wind in the steady atmospheric Ekman layer with constant eddy viscosity. Different from the well-known homogeneous system in [ 14 , 20 ], we retain the turbulent fluxes and establish a new ...
Y. Guan, Michal Feckan, Jinrong Wang
semanticscholar   +1 more source

The existence and Hyers–Ulam stability of solution for an impulsive Riemann–Liouville fractional neutral functional stochastic differential equation with infinite delay of order 1

open access: yesBoundary Value Problems, 2019
This paper deals with the existence of solution for an impulsive Riemann–Liouville fractional neutral functional stochastic differential equation with infinite delay of order ...
Yuchen Guo, X. Shu, Yongjin Li, Fei Xu
semanticscholar   +1 more source

Controllability and Hyers–Ulam Stability of Fractional Systems with Pure Delay

open access: yesFractal and Fractional, 2022
Linear and nonlinear fractional-delay systems are studied. As an application, we derive the controllability and Hyers–Ulam stability results using the representation of solutions of these systems with the help of their delayed Mittag–Leffler matrix ...
B. Almarri   +2 more
semanticscholar   +1 more source

Satbility of Ternary Homomorphisms via Generalized Jensen Equation

open access: yes, 2005
In this paper, we establish the generalized Hyers--Ulam--Rassias stability of homomorphisms between ternary algebras associted to the generalized Jensen functional equation $r f(\frac{sx+ty}{r}) = s f(x) + t f(y)$.Comment: 12 ...
Moslehian, Mohammad Sal   +1 more
core   +2 more sources

Controllability and Hyers–Ulam Stability of Differential Systems with Pure Delay

open access: yesMathematics, 2022
Dynamic systems of linear and nonlinear differential equations with pure delay are considered in this study. As an application, the representation of solutions of these systems with the help of their delayed Mittag–Leffler matrix functions is used to ...
Ahmed M. Elshenhab, Xingtao Wang
semanticscholar   +1 more source

A fractional differential equation with multi-point strip boundary condition involving the Caputo fractional derivative and its Hyers–Ulam stability

open access: yesBoundary Value Problems, 2021
In this work, we investigate the existence, uniqueness, and stability of fractional differential equation with multi-point integral boundary conditions involving the Caputo fractional derivative.
Mehboob Alam   +5 more
semanticscholar   +1 more source

Impulsive Coupled System of Fractional Differential Equations with Caputo–Katugampola Fuzzy Fractional Derivative

open access: yesJournal of Mathematics, 2021
In this article, we investigate the existence, uniqueness, and different kinds of Ulam–Hyers stability of solutions of an impulsive coupled system of fractional differential equations by using the Caputo–Katugampola fuzzy fractional derivative.
Leila Sajedi   +2 more
doaj   +1 more source

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