PUBLICATIONS DE L'INSTITUT MATHÉMATIQUE (BEOGRAD) (N.S.) Vol. 55(69), pp. 2328 (1994) 

A note on skew polynomial ringsMichael G. VoskoglouTechnological & Educational Institute (T.E.I.), New Buildings  30200 Mesolongi, GreeceAbstract: Let $R$ be a ring of prime characteristic and let $D$ be a finite set of derivations of $R$. We obtain results connecting the $D$simplicity of $R$ with the simplicity of the skew polynomial ring over $R$ defined with respect to $D$. A similar result was quoted, without proof, by the author in an earlier paper. Classification (MSC2000): 16A05 Full text of the article:
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