Geodesic
Affine semigroups over an arbitrary field†
Glasgow mathematical journal, Tome 7 (1965) no. 2, pp. 80-92

Voir la notice de l'article provenant de la source Cambridge University Press

Let L V denote the algebra of all linear transformations on an n-dimensional vector space V over a field Φ. A subsemigroup S of the multiplicative semigroup of L V will be said to be an affine semigroup over Φ if S is a linear variety, i.e., a translate of a linear subspace of L V.This concept in a somewhat different form was introduced and studied by Haskell Cohen and H. S. Collins [1]. In an appendix we give their definition and outline a method of describing possibly infinite dimensional affine semigroups in terms of algebras and supplemented algebras. 
Clark, W. Edwin. Affine semigroups over an arbitrary field†. Glasgow mathematical journal, Tome 7 (1965) no. 2, pp. 80-92. doi: 10.1017/S2040618500035231
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