(Encyclopedia) graph, figure that shows relationships between quantities. The graph of a function y=f (x) is the set of points with coordinates [x, f (x)] in the xy-plane, when x and y are numbers. A…
(Encyclopedia) Jacobi, Carl Gustav JacobJacobi, Carl Gustav Jacobkärl g&oobreve;sˈtäf yäˈkôp yäkôˈbē [key], 1804–51, German mathematician. He was an outstanding teacher and was professor of…
(Encyclopedia) alfalfa caterpillar, larva of the alfalfa butterfly, Colias eurytheme, a member of the family Pieridae. Found throughout most of Mexico, the United States, and S Canada, it is…
(Encyclopedia) bark or barquebarqueboth: bärk [key], sailing vessel with three masts, of which the mainmast and the foremast are square-rigged while the mizzenmast is fore-and-aft-rigged. Although…
(Encyclopedia) polynomial, mathematical expression which is a finite sum, each term being a constant times a product of one or more variables raised to powers. With only one variable the general form…
(Encyclopedia) Philippine Independent Church, religious body that separated from the Roman Catholic Church in 1902 and rejected the spiritual authority of the pope. It is known popularly as the…
(Encyclopedia) TinianTiniantĭnēănˈ, tēnēänˈ [key], island (2010 pop. 3,136), 39 sq mi (101 sq km), W Pacific, one of the Northern Mariana Islands. The island lies immediately SW of Saipan. The…
(Encyclopedia) purification, in religion, the ceremonial removal of what the religion deems unclean. The usual agents of purification are water (as in baptism), bodily alteration (as in circumcision…
(Encyclopedia) subtraction, fundamental operation of arithmetic; the inverse of addition. If a and b are real numbers (see number), then the number a−b is that number (called the difference) which…
(Encyclopedia) Wenceslaus I, d. 1253, king of Bohemia (1230–53), son and successor of Ottocar I. He invited large numbers of Germans to settle in the villages and towns of Bohemia and Moravia. In…
