Search Results - "Rassias, John Michael"
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Stability of the Apollonius Type Additive Functional Equation in Modular Spaces and Fuzzy Banach Spaces
Published in Mathematics (Basel) (01-11-2019)“…In this work, we investigate the generalized Hyers-Ulam stability of the Apollonius type additive functional equation in modular spaces with or without Δ 2…”
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A MEASURE ZERO STABILITY OF A FUNCTIONAL EQUATION ASSOCIATED WITH INNER PRODUCT SPACE
Published in Journal of the Korean Mathematical Society (2017)“…Let X, Y be real normed vector spaces. We exhibit all the solutions $f:X{\rightarrow}Y$ of the functional equation f(rx + sy) + rsf(x - y) = rf(x) + sf(y) for…”
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3
Weighted Heisenberg–Pauli–Weyl uncertainty principles for the linear canonical transform
Published in Signal processing (01-12-2019)“…•The Plancherel–Parseval–Rayleigh identities associated with the linear canonical transform (LCT) and 2D LCT are derived.•Based on the derived identities, the…”
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Stability of a cubic functional equation in intuitionistic random normed spaces
Published in Applied mathematics and mechanics (2010)“…In this paper, the stability of a cubic functional equation in the setting of intuitionistic random normed spaces is proved. We first introduce the notation of…”
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A FIXED POINT APPROACH TO THE STABILITY OF A GENERAL MIXED ADDITIVE-CUBIC EQUATION ON BANACH MODULES
Published in Acta mathematica scientia (01-05-2012)“…Using a fixed-point method, we establish the generalized Hyers-Ulam stability of a general mixed additive-cubic equation: f(kx + y) + f(kx - y) = kf(x + y) +…”
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On the Generalized Stabilities of Functional Equations via Isometries
Published in Axioms (01-06-2024)“…The main goal of this research article is to investigate the stability of generalized norm-additive functional equations. This study demonstrates that these…”
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A Note on the Stability of Functional Equations via a Celebrated Direct Method
Published in European Journal of Mathematical Analysis (10-11-2022)“…More than ten years after Justyna Sikorska [8] attempted to solve the Heyers-Ulam stability of a single variable equation by using direct method. In this…”
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Stochastic Lie bracket (derivation, derivation) in MB-algebras
Published in Journal of inequalities and applications (13-05-2020)“…By a stochastic controller, we make stable the pseudo stochastic Lie bracket (derivation, derivation) in complex MB-algebras. Next, we get an approximation by…”
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The Stability of Functional Equations with a New Direct Method
Published in Mathematics (Basel) (01-04-2022)“…We investigate the Hyers–Ulam stability of an equation involving a single variable of the form ∥f(x)−αf(kn(x))−βf(kn+1(x))∥⩽u(x) where f is an unknown operator…”
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Non-symmetry and symmetry of syzygies of a system of Cauchy functional equations with a homomorphism
Published in Mathematics Open (2022)“…Two entirely different Cauchy functional equations have been investigated in the literature with a couple of unknown operators f and g mapping a unitary ring X…”
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Approximation of Mixed Euler-Lagrange σ-Cubic-Quartic Functional Equation in Felbin’s Type f-NLS
Published in Journal of function spaces (2021)“…In this research paper, the authors present a new mixed Euler-Lagrange σ-cubic-quartic functional equation. For this introduced mixed type functional equation,…”
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Stability of the Jensen-Type Functional Equation in C^∗-Algebras: A Fixed Point Approach
Published in Abstract and Applied Analysis (01-01-2009)“…Using fixed point methods, we prove the generalized Hyers-Ulam stability of homomorphisms in C∗-algebras and Lie C∗-algebras and also of derivations on…”
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Ulam Stabilities and Instabilities of Euler–Lagrange-Rassias Quadratic Functional Equation in Non-Archimedean IFN Spaces
Published in Mathematics (Basel) (01-12-2021)“…In this paper, we use direct and fixed-point techniques to examine the generalised Ulam–Hyers stability results of the general Euler–Lagrange quadratic mapping…”
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Ulam Stability Results of Functional Equations in Modular Spaces and 2-Banach Spaces
Published in Mathematics (Basel) (01-01-2023)“…In this work, we investigate the refined stability of the additive, quartic, and quintic functional equations in modular spaces with and without the…”
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Stabilities and non-stabilities of reciprocal-nonic and reciprocal-decic functional equations
Published in Boletim da Sociedade Paranaense de Matemática (01-01-2020)“…This paper focuses at the various stability results of reciprocal-nonic and reciprocal-decic functional equations in non-Archimedean fields and illustrations…”
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Orthogonal Stability and Nonstability of a Generalized Quartic Functional Equation in Quasi-β-Normed Spaces
Published in Journal of function spaces (2021)“…In this work, we examine the generalized Hyers-Ulam orthogonal stability of the quartic functional equation in quasi-β-normed spaces. Moreover, we prove that…”
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A MEASURE ZERO STABILITY OF A FUNCTIONAL EQUATION ASSOCIATED WITH INNER PRODUCT SPACE
Published in Journal of the Korean Mathematical Society (01-03-2017)“…Let $X, Y$ be real normed vector spaces. We exhibit all the solutions $f:X\to Y$ of the functional equation $ f(rx+sy)+rsf(x-y)=rf(x)+sf(y) $ for all $x, y\in…”
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Stability of Euler-Lagrange-Jensen’s (a,b)- Sextic Functional Equation in Multi-Banach Spaces
Published in International journal of analysis and applications (01-01-2018)“…In this paper, we prove the Hyers-Ulam Stability of Euler-Lagrange-Jensen’s (a,b)-Sextic Functional Equation in Multi-Banach Spaces…”
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On the stability of a class of cosine type functional equations
Published in Boletim da Sociedade Paranaense de Matemática (01-01-2019)“…The aim of this paper is to investigate the stability problem for the pexiderized trigonometric functional equation f₁(xy)+f₂(xσ(y))=2g₁(x)g₂(y), x,y∈G, …”
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On the Hyers-Ulam Stability of a General Mixed Additive and Cubic Functional Equation in n-Banach Spaces
Published in Abstract and Applied Analysis (01-01-2012)“…The objective of the present paper is to determine the generalized Hyers-Ulam stability of the mixed additive-cubic functional equation in n-Banach spaces by…”
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