A generalization of arithmetic in which symbols, usually letters of the alphabet, represent numbers or members of a specified set of numbers and are related by operations that hold for all numbers in the set.
gen.er.al.i.za.tion n.(名词)The act or an instance of generalizing.归纳:归纳的行为或实例A principle, a statement, or an idea having general application.概括的原则、叙述或思想