Godavaya ship were found black and red ware pottery - dating from the 1st century to the 4th Century - together with a stone throne and coloured ball clay for making painted roofing tiles. Godavaya is home to five of the seven global marine turtle species: Hawksbill, Leatherback, Green turtle, Loggerhead and Olive Ridley turtle, which are all threatened. It has been proposed that the Leatherback turtles of Sri Lanka and the Nicobar Islands form a separate, genetically distinct Indian Ocean subpopulation. Godavaya beach is possibly the best Leatherback turtle nesting beach in the island, with the largest nesting population. A
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