Gala (apple) Gala (apple) Gala is a clonally propagated apple cultivar with a mild and sweet flavor. "Gala" apples ranked at number 2 in 2006 on the US Apple Association's list of most popular apples, after "Red Delicious" and before "Golden Delicious", "Granny Smith", and "Fuji" (in order). The skin color of the fruit is non-uniform. Recently, The US Apple Association has projected that the Gala apple will become America's favorite apple. The "Granny Smith", "Fuji", and "Honeycrisp" apples are expected to rank third, fourth and fifth, respectively. Gala apples are vertically striped or mottled, overall orange in color. They are sweet,
History of manifolds and varieties History of manifolds and varieties The study of manifolds combines many important areas of mathematics: it generalizes concepts such as curves and surfaces as well as ideas from linear algebra and topology. Certain special classes of manifolds also have additional algebraic structure; they may behave like groups, for instance. In that case, they are called Lie Groups. Alternatively, they may be described by polynomial equations, in which case they are called algebraic varieties, and if they additionally carry a group structure, they are called algebraic groups. The term "manifold" comes from German "Mannigfaltigkeit," by Riemann. In English, "manifold" refers to