I am a senior student at the Department of mathematics, is interested in your article about "On Derivations of Incline Algebras;(2010)". Which I study the article is now. But I have not understand about 3.11 theorem which says
.D (d x ∗ y x ∗ dy) = D 2x ∗ y d x ∗ dy D x ∗ d y x ∗ d2y
theorems and 3.12 which said
D 1 (d 2x ∗ y x ∗ D 2Y). = D 1D 2x ∗ y d 2x ∗ D 1y D 1x ∗ D 2Y x ∗ D 1D 2Y.
I should be grateful if you would explain more about your article.