Results 51 to 60 of about 6,655 (246)
Hyers–Ulam stability and hyperstability of a Jensen-type functional equation on 2-Banach spaces
Journal of Inequalities and Applications, 2022 The main aim of this paper is to establish the Hyers–Ulam stability and hyperstability of a Jensen-type quadratic mapping in 2-Banach spaces. That is, we prove the various types of Hyers–Ulam stability and hyperstability of the Jensen-type quadratic ...
Arumugam Ponmana Selvan, Abbas Najati
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STABILITY OF THE JENSEN FUNCTIONAL EQUATION IN FUZZY BANACH ALGEBRAS [PDF]
Korean Journal of Mathematics, 2012 Summary: In this paper, we prove the Hyers-Ulam stability of the Jensen functional equation in fuzzy Banach algebras by using fixed point method and by using direct method.
Lee, Jung Rye, Shin, Dong Yun
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Business Strategy and the Environment, EarlyView.ABSTRACT This study examines the role of managerial ability in driving environmental performance and overall environmental, social, and governance (ESG) ratings in the context of the European Union sustainability reporting regulations. Using a sample of 7242 firm‐year observations over the period 2015–2023, our results indicate a structural change in ...
Mihaela Ionașcu +2 more
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Business Strategy and the Environment, EarlyView.ABSTRACT This study examines the determinants of firms' propensity to adopt green buildings in the Euro Stoxx 300 and the S&P 500 indices, during 2012–2023. Using random forest binary classifiers, we assess the relative importance of financial, sectoral, geographic, and climate governance predictors and uncover nonlinear relationships often overlooked ...
María del Carmen Valls Martínez +3 more
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Asymptotic behavior of alternative Jensen and Jensen type functional equations
Bulletin des Sciences Mathématiques, 2005 Let \(X\) be a real normed space and \(Y\) be a real Banach space. A mapping \(A : X \to Y\) is called (i) alternative additive of the first form if \(A(x + y) + A(x - y) = -2A(-x)\); (ii) alternative additive of the second form if \(A(x + y) - A(x - y) = -2A(-y)\); (iii) alternative Jensen if \(A( - \frac{x + y}{2}) = - \frac{1}{2}(A(x) + A(y))\); (iv)
Rassias, J.M., Rassias, M.J.
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Business Strategy and the Environment, EarlyView.ABSTRACT As the circular economy transition gains traction in the healthcare sector, extending the lifespan of complex medical devices has become a key priority, given their high cost and the challenges associated with their technological sophistication.
Tetiana Shevchenko +7 more
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Stability of generalized quadratic functional equation on a set of measure zero
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2015 In this paper we prove the Hyers-Ulam stability of the following K-quadratic functional equation ∑ k ∈ K f(x+ k.y)= Lf(x)+ Lf(y), x,y ∈ E, where E is a real (or complex) vector space.
Youssef Aribou +3 more
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On a Local Stability of the Jensen Functional Equation
Demonstratio Mathematica, 1989 The problem of stability of Cauohy's functional equation on a restriot domain D in R has a positive answer [5]. In this paper we shall show that Cauchy's functional equation and Jensen's functional equation on a restriot domain D being some subset of R are stable.
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Complex Firms, Controversial Outcomes: Global Evidence on ESG Failures and Remedies
Business Strategy and the Environment, EarlyView.ABSTRACT We examine whether business complexity increases firms' exposure to negative environmental, social, and governance (ESG) outcomes, specifically ESG controversies, using a global panel of firms from 37 countries over the period 2002–2021.
Abongeh A. Tunyi +3 more
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Higher Ring Derivation and Intuitionistic Fuzzy Stability
Abstract and Applied Analysis, 2012 We take account of the stability of higher ring derivation in intuitionistic fuzzy Banach algebra associated to the Jensen type functional equation. In addition, we deal with the superstability of higher ring derivation in intuitionistic fuzzy Banach ...
Ick-Soon Chang
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