q skew derivation

Let $(\sigma ,\delta )$ be a skew derivation on a ring $R$. Let $q$ be a central $(\sigma ,\delta )$-constant (http://planetmath.org/SigmaDeltaConstant). Suppose further that $\delta \sigma =q\cdot \sigma \delta$. Then we say that $(\sigma ,\delta )$ is a $q$-.

Title	q skew derivation
Canonical name	QSkewDerivation
Date of creation	2013-03-22 11:49:41
Last modified on	2013-03-22 11:49:41
Owner	antizeus (11)
Last modified by	antizeus (11)
Numerical id	10
Author	antizeus (11)
Entry type	Definition
Classification	msc 16S36
Related topic	QSkewPolynomialRing