ABSTRACT

Let k be a field, and G be an algebra over k. A deformation of G is given by a commutative ring A, an algebra H over A, and a morphism of rings θ : A → k such that k ⊗ A H = G , https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315371016/5e644d52-ef68-4f0e-ac73-bbf480af375a/content/eq1751.tif"/>