PUBLICATIONS DE L'INSTITUT MATHÉMATIQUE (BEOGRAD) (N.S.) Vol. 39(53), pp. 7982 (1986) 

EXTENDING DERIVATIONS AND ENDOMORPHISMS TO SKEW POLYNOMIAL RINGSMichael G. VoskoglouInstitute of Technological Education, Patras, GreeceAbstract: We treat the problem of extending derivations and endomorphisms of a given ring $R$ to a skew polynomial ring $R[x,f,d]$ over $R$. As an application we obtain the general conditions for the existence of such rings in finitely many variables over $R$. We also prove that under suitable conditions, the $d$ (or the $f$)simplicity of $R$ implies the $f$simplicity of $R[x,f,d]$. Classification (MSC2000): 16A05 Full text of the article:
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