Results 11 to 20 of about 174,282 (159)
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 new genus of nemonychid weevil from Burmese amber (Coleoptera, Curculionoidea)
ZooKeys, 2014 The first fossil nemonychid (Nemonychidae) in Burmese amber, belonging to the subfamily Rhinorhynchinae, is described and figured as Burmonyx zigrasi Davis and Engel, gen. n. and sp. n.
Steve Davis, Michael Engel
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A semigroup characterization of well-posed linear control systems [PDF]
, 2013 We study the well-posedness of a linear control system $\Sigma(A,B,C,D)$ with unbounded control and observation operators. To this end we associate to our system an operator matrix $\mathcal{A}$ on a product space $\mathcal{X}^p$ and call it $p$-well ...
Bombieri, Miriam, Engel, Klaus-Jochen
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ZooKeys, 2013 A well-developed recurrent veinlet is found in the forewing of two species of Nymphidae from the Middle Jurassic locality of Daohugou (Inner Mongolia, China), Liminympha makarkini Ren & Engel and Daonymphes bisulca gen. et sp. n.
Vladimir Makarkin +3 more
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Total Hadronic Cross-Section for Photon-Photon Interactions at LEP [PDF]
, 1997 The total hadronic cross-section for the interaction of real photons is extracted from a measurement of the cross-section of the process e+e->e+e- + hadrons using a luminosity function for the photon flux and form factors for extrapolating to Q**2=0. The
Acciarri +19 more
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Behavioral Sciences, 2018 The purpose of this paper is to present a long- term electroclinical and employment follow up in temporal lobe epilepsy (TLE) patients in a comprehensive epilepsy surgery program.
Lilia Maria Morales Chacón +11 more
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Stability and Convergence of Product Formulas for Operator Matrices [PDF]
, 2012 We present easy to verify conditions implying stability estimates for operator matrix splittings which ensure convergence of the associated Trotter, Strang and weighted product formulas.
A. Bátkai +15 more
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Income elasticity of food expenditures of the average Czech household
Agricultural Economics (AGRICECON), 2004 The paper was focused on the quantitative research of the income elasticity in the field of the food expenditures within the consumer bundle of the average Czech household between 1995 and 2002.
P. Syrovátka
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Why does the Engel method work? Food demand, economies of size and household survey methods [PDF]
, 2002 Estimates of household size economies are needed for the analysis of poverty and inequality. This paper shows that Engel estimates of size economies are large when household expenditures are obtained by respondent recall but small when expenditures are ...
Anand S. +13 more
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On Fitting groups whose proper subgroups are solvable [PDF]
International Journal of Group Theory, 2016 This work is a continuation of [A. O. Asar, On infinitely generated groups whose proper subgroups are solvable, {em J. Algebra}, {bf 399} (2014) 870-886.], where it was shown that a perfect infinitely generated group whose proper ...
Ali Asar
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