Tempranillo Navarra, and Penedès. During the 1990s, growers in Australia and South Africa started significant Tempranillo plantations. Tempranillo is a black grape with a thick skin. It grows best at relatively high altitudes, but it also can tolerate a much warmer climate. With regard to Tempranillo's production in various climates, wine expert Oz Clarke notes, In the Ribera del Duero the average July temperature is around 21.4° Celsius (70.5° Fahrenheit), though temperatures in the middle of the day in the lower valley can jump as high as 40 °C (104 °F). At night the region experiences a dramatic diurnal temperature variation,
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