Results 11 to 20 of about 253,823 (270)
Identities with Engel conditions on derivations
Monatshefte für Mathematik, 2010 Let \(R\) be a semiprime ring with center \(Z(R)\), symmetric Martindale quotient ring \(Q\), and nonzero derivation \(D\). The authors prove two results involving \(D\) and Engel conditions. Let \([x,y_1]_1=xy_1-y_1x\) and for \(n>1\) set \([x,y_1,\dots,y_n]_n=[[x,y_1,\dots,y_{n-1}]_{n-1},y_n]_1\).
Kosan, M.Tamer +2 more
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Radical Rings with Engel Conditions
Journal of Algebra, 2000 In a ring \(R\) the Lie multiplication and the Lie commutators are defined inductively by \([r,s]=rs-sr\), and \([r_1,\dots,r_{n+1}]=[[r_1,\dots,r_n],r_{n+1}]\). A ring \(R\) is \(n\)-Engel, if \([r,s,\dots,s]=0\) where \(s\) appears exactly \(n\) times.
Amberg, Bernhard, Sysak, Yaroslav P.
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Integrability conditions on Engel-type manifolds [PDF]
Analysis and Mathematical Physics, 2015 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ovidiu Calin, Der-Chen Chang, Jishan Hu
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Semi-nonparametric IV estimation of shape-invariant Engel curves [PDF]
Econometrica, 2007 This paper studies a shape-invariant Engel curve system with endogenous total expenditure, in which the shape-invariant specification involves a common shift parameter for each demographic group in a pooled system of nonparametric Engel curves.
Blundell, R., Chen, X., Kristensen, D.
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On Residually Finite Groups with Engel-like Conditions [PDF]
Communications in Algebra, 2016 9 ...
Raimundo A Bastos
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Baltic Region, 2023 As a scientific method, comparative studies respond to the needs of society. However, the logic of globalisation has reduced the demand for comparative analysis in international and national (regional) studies. Nevertheless, old, settled coastal areas —
Nikolay M. Mezhevich, Denis I. Olifir
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An Engel condition for orderable groups [PDF]
Bulletin of the Brazilian Mathematical Society, New Series, 2015 Let m,n be positive integers, v a multilinear commutator word and w=v^m. We prove that if G is an orderable group in which all w-values are n-Engel, then the verbal subgroup v(G) is locally nilpotent. We also show that in the particular case where v=x the group G is nilpotent (rather than merely locally nilpotent).
P. Shumyatsky +2 more
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Food-Away-from-Home Expenditure in Mexico during the COVID-19 Pandemic: A Micro-Econometric Analysis
Agriculture, 2022 Disruptive events such as the coronavirus disease 2019 (COVID-19) pandemic have the potential to reshape even the most basic human systems and behaviors, including those related to food production, acquisition, and consumption.
Antonio Aguilar-Lopez, Aleš Kuhar
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A Survey of Factors Affecting Financing of Small and Medium-Sized Businesses in the Tehran Stock Exchange (TSE) [PDF]
Journal of Asset Management and Financing, 2023 The purpose of this research was to identify the factors affecting financing of small and medium-sized enterprises in the Tehran Stock Exchange (TSE). The method of this study was to use the multiple regression model and panel data to test the hypotheses.
Leila Mirzaei +2 more
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Nonparametric IV estimation of shape-invariant Engel curves [PDF]
, 2003 This paper concerns the identification and estimation of a shape-invariant Engel curve system with endogenous total expenditure. The shape-invariant specification involves a common shift parameter for each demographic group in a pooled system of Engel
Blundell, R., Chen, X., Kristensen, D.
core +1 more source