Tarte Tatin and 1917; whereas Maxim's was purchased by the Vaudable family in 1932. Originally, the tarte Tatin was made with two regional apple varieties: Reine des Reinettes (Queen of the Pippins), and Calville. Over the years, other varieties have tended to displace them, including Golden Delicious, Granny Smith, Fuji and Gala. When choosing apples for a tarte Tatin, it is important to pick some that will hold their shape while cooking, and not melt into apple sauce. In North America, Golden Delicious, Granny Smith, or Jonathan are excellent choices . Tarte Tatin can also be made with pears, quinces, peaches, pineapple,
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