Affine hull
In mathematics, the affine hull or affine span of a set "S" in Euclidean space R is the smallest affine set containing "S", or equivalently, the intersection of all affine sets containing "S". Here, an "affine set" may be defined as the translation of a vector subspace. The affine hull aff("S") of "S" is the set of all affine combinations of elements of "S", that is, Properties. For any subsets formula_2