id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ejpam-1829	Bhat, Vijay	Skew-Laurent Rings over $\sigma(*)$-rings	2014	8	.pdf	application/pdf	3629	271	88	We note that the condition that P ∈ Min.Spec(O(R)) implies that P ∩ R ∈ Min.Spec(R) can not be ignored as follows: Let R = Q×Q. Let σ : R→ R be defined by σ((a, b)) Skew Polynomial Rings Let R be a ring, σ be an endomorphism of R and δ a σ-derivation of R. Recall that δ is an additive map δ : R→ R such that δ(ab) = δ(a)σ(b) + aδ(b), for all a, b ∈ R. Example 3.	cache/ejpam-1829.pdf	txt/ejpam-1829.txt