Durif producers of Durif. The grape can also be found in Israel, Brazil, Argentina, Chile, and Mexico. Confirmed as recently as 1997, old plantings of Durif continued to be used to produce popular wine in the Rutherglen, Victoria region of Australia. Durif is now grown in other wine regions of Australia, such as Riverina and Riverland, with over under cultivation by 2000. DNA fingerprinting has shown that the majority of Petite Sirah plantings in California are actually Durif. Some vineyards were found to be a field blend of Durif and other varieties, such as Mondeuse noire, all labeled as "Petite Sirah".
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