Fuji (apple) the exclusion of other varieties and Japan's apple imports remain low. Aomori Prefecture, home to the Fuji apple, is the best known apple growing region of Japan. Of the roughly 900,000 tons of Japanese apples produced annually, 500,000 tons come from Aomori. Outside Japan, the popularity of Fuji apples continues to grow. In 2016 and 2017, Fuji apples accounted for nearly 70% of China's 43 million tons grown. Since their introduction into the U.S. market in the 1980s, Fuji apples have gained popularity with American consumers — as of 2016, Fuji apples ranked number 3 on the US Apple Association's
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