Results 11 to 20 of about 8,223,506 (298)
Engel conditions and symmetric tensors [PDF]
Linear and Multilinear Algebra, 2011 In a recent study of Engel Lie rings, Serena Cicalo` and Willem de Graaf have given a practical set of conditions for an additively finitely generated Lie ring L to satisfy an Engel condition. We present a simpler and more direct proof of this fact.
Sandro Mattarei (17162998)
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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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Clinical efficacy and cost-effectiveness of epilepsy surgery in low- and middle-income countries: A systematic review and meta-analysis. [PDF]
Epilepsia OpenAbstract Objective To synthesize evidence on clinical outcomes, direct surgical costs, and cost‐effectiveness of resective epilepsy surgery for drug‐resistant epilepsy in low‐ and middle‐income countries (LMICs). Methods MEDLINE, PubMed, Scopus, and the Cochrane Library were searched through May 17, 2026.
Arifin MT, Pribadi F, Öner N.
europepmc +2 more sources
An Engel condition with derivation [PDF]
Proceedings of the American Mathematical Society, 1993 Let R R be a prime ring, L
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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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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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On singularity of distribution of random variables with independent symbols of Oppenheim expansions
Modern Stochastics: Theory and Applications, 2017 The paper is devoted to the restricted Oppenheim expansion of real numbers ($\mathit{ROE}$), which includes already known Engel, Sylvester and Lüroth expansions as partial cases.
Liliia Sydoruk, Grygoriy Torbin
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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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Engel, Nilpotent and Solvable BCI-algebras
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019 In this paper, we define the concepts of Engel, nilpotent and solvable BCI-algebras and investigate some of their properties. Specially, we prove that any BCK-algebra is a 2-Engel.
Mohammadzadeh Elahe, Borzooei Rajab Ali
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Can Growing Degree Days and Photoperiod Predict Spring Wheat Phenology?
Frontiers in Environmental Science, 2017 Wheat (Triticum aestivum) production in the rainfed area of Pothwar Pakistan is extremely vulnerable to high temperature. The expected increase in temperature due to global warming should result in shorter crop life cycles, and thus lower biomass and ...
Muhammad A. Aslam +7 more
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