Results 61 to 70 of about 4,196 (286)
The Hadamard Determinant Inequality - Extensions to Operators on a Hilbert Space
, 2017 A generalization of classical determinant inequalities like Hadamard's inequality and Fischer's inequality is studied. For a version of the inequalities originally proved by Arveson for positive operators in von Neumann algebras with a tracial state, we ...
Nayak, Soumyashant
core +1 more source
ESG Performance and Credit Risk: Evidence From Chinese Manufacturing Companies
International Journal of Finance &Economics, EarlyView.ABSTRACT This study investigates the effect of corporate environmental, social, and governance (ESG) performance on credit risk using a sample of manufacturing firms listed on China's Shanghai and Shenzhen A‐share markets from 2009 to 2021. Employing fixed effects, the generalised method of moments, and instrumental variable models, we find that ...
Yanan Wang +4 more
wiley +1 more source
On an upper bound for Sherman’s inequality
Journal of Inequalities and Applications, 2016 Considering a weighted relation of majorization, Sherman obtained a useful generalization of the classical majorization inequality. The aim of this paper is to extend Sherman’s inequality to convex functions of higher order.
Slavica Ivelić Bradanović +2 more
doaj +1 more source
Inconsistency of the Capital Asset Pricing Model in a Multi‐Currency Environment
International Journal of Finance &Economics, EarlyView.ABSTRACT The capital asset pricing model (CAPM) is a widely adopted model in asset pricing theory and portfolio construction because of its intuitive nature. One of its main conclusions is that there exists a global market portfolio that each rational investor should hold in proportion to the risk‐free asset. In this paper, we demonstrate theoretically
Khalifa Al‐Thani +4 more
wiley +1 more source
Journal of Inequalities and Applications, 2020 In this paper, we give refinements of the integral form of Jensen’s inequality and the Lah–Ribarič inequality. Using these results, we obtain a refinement of the Hölder inequality and a refinement of some inequalities for integral power means and ...
J. Pečarić, J. Perić
doaj +1 more source
Jensen's inequality for the Tukey median [PDF]
, 2007 Jensen's inequality states for a random variable X with values in Rd and existing expectation and for any convex function f : R^d -> R, that f(E(X))
Gather, Ursula, Kwiecien, Robert
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An approach for metric space with a convex combination operation and applications
, 2015 In this paper, we embed metric space endowed with a convex combination operation, named convex combination space, into a Banach space and the embedding preserves the structures of metric and convex combination.
Thuan, Nguyen Tran
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CSR disclosure and investment efficiency in MENA countries: The moderating role of CSR committee
Strategic Change, EarlyView.ABSTRACT Corporate social responsibility disclosure (CSRD) is often recognized as a transparency mechanism that allows companies to communicate their commitment to CSR. However, CSRD may also exacerbate agency conflicts. This study addresses these two contrasting perspectives by investigating the impact of CSRD on investment efficiency and exploring ...
Mohamed Malek Belhoula +3 more
wiley +1 more source
Demonstratio Mathematica, 1994 Let \(\tau\) be a normal semifinite trace on a von Neumann algebra \(A\), let \(\alpha: A\to A\) be a positive linear contraction and let \(a= a^*\in A\). If \(f\) is a continuous convex function defined on the spectrum of \(a\), then it is shown that if \(\tau(\alpha(f(a))_+)< \infty\) then either \(\tau((f(\alpha(a)))_+)< \infty\) or \(\tau((f(\alpha(
openaire +1 more source
A Framework for Understanding and Evaluating Localization: The Case of HelpAge International
Public Administration and Development, EarlyView.ABSTRACT Many transnational non‐governmental organizations (TNGOs) are reevaluating their organizational forms and norms as they pursue localization. Localization itself is a contested and multifaceted concept, however, complicating the design, implementation, and evaluation of localization efforts.
Hans Peter Schmitz, George E. Mitchell
wiley +1 more source