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Stability of an alternative Jensen's functional equation [PDF]
ScienceAsia, 2013 We prove the Hyers-Ulam stability of an alternative Jensen's functional equation(f(x)+f(y))=2 = f((x+ y)=2) in the class of mappings from 2-divisible abelian groups to Banach spaces.
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Business Strategy and the Environment, EarlyView.ABSTRACT The agri‐food sector is vital to economic development, but it exerts significant environmental and social pressures. This study draws on the natural resource‐based view. It investigates the strategic sustainability‐performance nexus in the global food and beverage industry using a longitudinal dataset (2013–2023) of 633 firms across the EU ...
Alessandro Bernardo +5 more
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Exploring Supply Chain Visibility for Circularity: A Delphi Approach
Business Strategy and the Environment, EarlyView.ABSTRACT Circular supply chains (CSCs) depend on enhanced supply chain visibility (SCV) to track and manage resource flows and thereby enable efficient decision‐making. Despite confronting silo mentalities, fragmented information, technological barriers, resistance to change, and a lack of standardization, data sharing remains crucial for SCV and ...
Tarun Kumar Agrawal +7 more
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On a local form of Jensen's functional equation
Aequationes Mathematicae, 1985 A function f:(a,b)\(\rightharpoonup R\) is said to be locally Jensen at \(x\in (a,b)\) if there exists \(\delta >0\) such that (1) \(1/2(f(x+h)+f(x- h))=f(x)\) holds for ...
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Free Trade Zones and Corporate ESG: Evidence From a Quasi‐Natural Experiment in China
Business Strategy and the Environment, EarlyView.ABSTRACT This study examines how China's Pilot Free Trade Zones (FTZs) influence corporate ESG performance. Using a staggered difference‐in‐differences model on Chinese listed firms from 2009 to 2024, we combine coarsened exact matching (CEM) and geography‐based instrumental variables to ensure robust identification.
Wen Li, Yinghan Zhao, Brian Lucey
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Stability of a Cauchy-Jensen Functional Equation in Quasi-Banach Spaces
Journal of Inequalities and Applications, 2010 We obtain the generalized Hyers-Ulam stability of the Cauchy-Jensen functional equation .
Park Won-Gil, Bae Jae-Hyeong
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Hyperstability of Cauchy and Jensen functional equations in 2-normed spaces
Journal of Inequalities and ApplicationsIn this article, with simple and short proofs without applying fixed point theorems, some hyperstability results corresponding to the functional equations of Cauchy and Jensen are presented in 2-normed spaces.
Abbas Najati +3 more
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Stability of the Jensen-Type Functional Equation in C∗-Algebras: A Fixed Point Approach
Abstract and Applied Analysis, 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 C∗-algebras and Lie C∗-algebras for the Jensen-type functional equation f((x+y)/2)+f((x−y)/2)=f(x).
Choonkil Park, John Michael Rassias
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Do Sustainability Committees Mitigate or Exacerbate ESG Decoupling?
Business Strategy and the Environment, EarlyView.ABSTRACT This study investigates the impact of sustainability committees (SCs) on environmental, social, and governance (ESG) decoupling in US publicly listed firms. In particular, it examines their influence on overall and dimension‐specific (E, S, G) ESG decoupling and distinguishes their effects on internal versus external ESG actions.
Weite Qiu +4 more
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Business Strategy and the Environment, EarlyView.ABSTRACT Although SMEs comprise over 90% of firms globally, research on their engagement with Scope 3 (value‐chain) greenhouse gas emissions remains limited. This PRISMA‐guided systematic review synthesises 49 SME‐relevant studies to develop a theory‐informed, practice‐oriented framework for more credible and sustained Scope 3 engagement.
Chidinma Uchendu +5 more
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