Artichoke production in Italy artichoke to Florence. By 1473, it had arrived in Venice. In 1915, 64,000 tons were produced. Italy produces dozens of varieties. Artichoke production in Italy Artichoke production in Italy has a long history. Italy is the world's largest producer of artichokes. With Spain and France, the three countries produce more than 80% of the world's artichokes. There are two theories as to its origin: artichokes may have come from the Levant, derived from the cardoon or thistle through a cross-fertilization process, while others attribute it to the work of Italian horticulturists. The first record of artichoke cultivation in Italy was
Variety of finite semigroups Variety of finite semigroups In mathematics, and more precisely in semigroup theory, a variety of finite semigroups is a set of semigroups having some nice algebraic properties. Those sets can be defined in two distinct way, using either algebraic notions or topological notions. Varieties of finite monoid, varieties of finite ordered semigroup and varieties of finite ordered monoid are defined similarly. This notion is very similar to the general notion of variety in universal algebra. Two equivalent definitions are now given. A variety "V" of finite (ordered) semigroup is a set of finite (ordered) semigroups which: The first condition is