Articles with "ulam stability" as a keyword



Existence, uniqueness, and Ulam stability of solutions of fractional conformable Langevin system on the ethane graph

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Published in 2024 at "Mathematical Methods in the Applied Sciences"

DOI: 10.1002/mma.9975

Abstract: The present study examines the Langevin coupled boundary value problem with the fractional conformable derivative on the ethane graph. The main objective of this research is to establish the existence and uniqueness of solutions with… read more here.

Keywords: existence uniqueness; ulam stability; fractional conformable; ethane graph ... See more keywords
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On Ulam stability of a third order linear difference equation in Banach spaces

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Published in 2020 at "Aequationes Mathematicae"

DOI: 10.1007/s00010-020-00722-5

Abstract: We obtain a result on Ulam stability and on the best Ulam constant for the linear difference equation $$x_{n+3}=ax_{n+2}+bx_{n+1}+c x_n,$$$$a,b,c \in \mathbb {K}$$, where $$\mathbb {K}$$ is one of the fields $$\mathbb {R}$$ or $$\mathbb… read more here.

Keywords: difference equation; linear difference; ulam stability;

Hyers–Ulam stability of integral equations with infinite delay

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Published in 2024 at "Aequationes mathematicae"

DOI: 10.1007/s00010-024-01080-2

Abstract: Integral equations with infinite delay are considered as functional equations in a Banach space. Two types of Hyers–Ulam stability criteria are established. First, it is shown that a linear autonomous equation is Hyers–Ulam stable if… read more here.

Keywords: hyers ulam; equations infinite; integral equations; ulam stability ... See more keywords
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The Ulam Stability Problem for the Functional Equation $$f(x\star g(y))=f(x)f(y)$$

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Published in 2020 at "Results in Mathematics"

DOI: 10.1007/s00025-020-01188-2

Abstract: We present a solution of Ulam’s stability problem for the functional equation $$f(x\star g(y))=f(x)f(y)$$f(x⋆g(y))=f(x)f(y) with vector-valued map f. read more here.

Keywords: stability problem; problem functional; math; mml ... See more keywords

The Hyers–Ulam stability of an additive-quadratic s-functional inequality in Banach spaces

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Published in 2021 at "Ricerche di Matematica"

DOI: 10.1007/s11587-021-00648-3

Abstract: For any fixed $$s \in \left\{ z \in \mathbb {C} : z \ne 0 \text { and } |z| read more here.

Keywords: functional inequality; bigg; ulam stability; hyers ulam ... See more keywords
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Ulam stability of bihomomorphisms and biderivations in Banach algebras

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Published in 2020 at "Journal of Fixed Point Theory and Applications"

DOI: 10.1007/s11784-020-0766-z

Abstract: Using the fixed point method and the direct method, we prove the Hyers–Ulam stability of biderivations and bihomomorphisms in Banach algebras and unital $$C^*$$ C ∗ -algebras, associated with the bi-additive functional inequality: 1 $$\begin{aligned}&\Vert… read more here.

Keywords: bihomomorphisms biderivations; banach algebras; stability bihomomorphisms; biderivations banach ... See more keywords

Boundedness, Compactness and the Hyers–Ulam Stability of a Linear Combination of Differential Operators

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Published in 2020 at "Complex Analysis and Operator Theory"

DOI: 10.1007/s11785-019-00972-5

Abstract: Let $$\lambda _1, \lambda _2 \ldots \lambda _{n-1}$$ λ 1 , λ 2 … λ n - 1 are non-zero complex numbers, $$\lambda _n$$ λ n a complex number, n a positive integer, $$D^n$$ D… read more here.

Keywords: lambda lambda; beta; hyers ulam; differential ... See more keywords

On the Hyers–Ulam stability of Riemann–Liouville multi-order fractional differential equations

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Published in 2019 at "Afrika Matematika"

DOI: 10.1007/s13370-019-00701-3

Abstract: In this paper, by using a Bielecki’s type norm and Banach fixed point theorem, we obtain a result on the Hyers–Ulam stability of Riemann–Liouville multi-order fractional differential equations. read more here.

Keywords: hyers ulam; stability riemann; ulam stability; liouville multi ... See more keywords

Hyers–Ulam Stability of a Class Second Differential Equation $$y''(x)+p(x)y'(x)+q(x)y(x)=F(y(x))$$y′′(x)+p(x)y′(x)+q(x)y(x)=F(y(x))

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Published in 2017 at "Bulletin of the Malaysian Mathematical Sciences Society"

DOI: 10.1007/s40840-017-0454-3

Abstract: In this paper, we study the Hyers–Ulam–Rassias stability and Hyers–Ulam stability for a class second differential equation $$\begin{aligned} y''(x)+p(x)y'(x)+q(x)y(x)=F(y(x)) \end{aligned}$$y′′(x)+p(x)y′(x)+q(x)y(x)=F(y(x))by a generalized fixed point theorem. Moreover, we show that the differential equation $$\begin{aligned} y'(x)=F(x,y(x)) \end{aligned}$$y′(x)=F(x,y(x))has… read more here.

Keywords: differential equation; stability class; hyers ulam; stability ... See more keywords

On Ulam’s Stability for a Coupled Systems of Nonlinear Implicit Fractional Differential Equations

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Published in 2019 at "Bulletin of the Malaysian Mathematical Sciences Society"

DOI: 10.1007/s40840-018-0625-x

Abstract: In this manuscript, we study the existence, uniqueness and various kinds of Ulam stability including Ulam–Hyers stability, generalized Ulam–Hyers stability, Ulam–Hyers–Rassias stability and generalized Ulam–Hyers–Rassias stability of the solutions to a nonlinear coupled systems of… read more here.

Keywords: fractional differential; ulam stability; implicit fractional; stability ... See more keywords

Ulam Stability of Jensen Functional Inequality on a Class of Noncommutative Groups

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Published in 2023 at "Journal of Function Spaces"

DOI: 10.1155/2023/6674969

Abstract: In the paper, we introduce new ρ -functional inequalities related to the Jensen functional equation and some properties. The Hyers-Ulam stability of functional inequalities is proved. read more here.

Keywords: jensen functional; stability jensen; ulam stability; inequality class ... See more keywords