Tempranillo shown no genetic connection between the cultivars. Spanish cultivation of "Vitis vinifera", the common ancestor of almost all vines in existence today, began in earnest with Phoenician settlement in the southern provinces. Later, according to the Roman writer Columella, wines were grown all over Spain; yet there are only scattered references to the name "Tempranillo". Ribera del Duero wine making extends back over 2,000 years, as evidenced by the 66-metre mosaic of Bacchus, the Roman god of wine, that was unearthed in 1972, at Baños de Valdearados. It is possible that this grape was introduced to the Western Hemisphere by
History of manifolds and varieties spaces with a differentiable or topological structure, while "variety" refers to spaces with an algebraic structure, as in algebraic varieties. In Romance languages, manifold is translated as "variety" – such spaces with a differentiable structure are literally translated as "analytic varieties", while spaces with an algebraic structure are called "algebraic varieties". Thus for example, the french word "" means topological manifold. In the same vein, the Japanese word "" (tayōtai) also encompasses both manifold and variety. ("" (tayō) means various.) Ancestral to the modern concept of a manifold were several important results of 18th and 19th century mathematics. The oldest