# curvilinear

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**Pythagorean theorem**— See also: Pythagorean trigonometric identity The Pythagorean theorem: The sum of the areas of the two squares on the legs (a and b) equals the area of the square on the hypotenuse (c) …62

**Perspective (graphical)**— Part of a series on …63

**Ridge detection**— The ridges (or the ridge set) of a smooth function of two variables is a set of curves whose points are, loosely speaking, local maxima in at least one dimension. For a function of N variables, its ridges are a set of curves whose points are… …64

**Architecture of the medieval cathedrals of England**— The medieval cathedrals of England, dating from between approximately 1040 and 1540, are a group of twenty five buildings which together constitute a major aspect of the country’s artistic heritage and are among the most significant material… …65

**furniture**— furnitureless, adj. /ferr ni cheuhr/, n. 1. the movable articles, as tables, chairs, desks or cabinets, required for use or ornament in a house, office, or the like. 2. fittings, apparatus, or necessary accessories for something. 3. equipment for …66

**graphic design**— the art or profession of visual communication that combines images, words, and ideas to convey information to an audience, esp. to produce a specific effect. * * * The art and profession of selecting and arranging visual elements such as… …67

**arts, East Asian**— Introduction music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature. Some studies of East Asia… …68

**The Method of Mechanical Theorems**— is a work by Archimedes which contains the first attested explicit use of infinitesimals.[1] The work was originally thought to be lost, but was rediscovered in the celebrated Archimedes Palimpsest. The palimpsest includes Archimedes account of… …69

**Curl (mathematics)**— Topics in Calculus Fundamental theorem Limits of functions Continuity Mean value theorem Differential calculus  Derivative Change of variables Implicit differentiation Taylor s theorem Related rates …70

**Gabriel Lamé**— (July 22, 1795 May 1, 1870) was a French mathematician. BiographyLamé was born in Tours, in today s département of Indre et Loire.He became well known for his general theory of curvilinear coordinates and his notation and study of classes of… …