What is the study of symbols and the rules for manipulating symbols in mathematics called
Algebra Algebra Algebra (from Arabic ""al-jabr"", literally meaning "reunion of broken parts") is one of the broad parts of mathematics, together with number theory, geometry and analysis. In its most general form, algebra is the study of mathematical symbols and the rules for manipulating these symbols; it is a unifying thread of almost all of mathematics. It includes everything from elementary equation solving to the study of abstractions such as groups, rings, and fields. The more basic parts of algebra are called elementary algebra; the more abstract parts are called abstract algebra or modern algebra. Elementary algebra is generally considered to
Terminal and nonterminal symbols Terminal and nonterminal symbols In computer science, terminal and nonterminal symbols are the lexical elements used in specifying the production rules constituting a formal grammar. "Terminal symbols" are the elementary symbols of the language defined by a formal grammar. "Nonterminal symbols" (or "syntactic variables") are replaced by groups of terminal symbols according to the production rules. The terminals and nonterminals of a particular grammar are two disjoint sets. Terminal symbols are literal symbols which may appear in the outputs of the production rules of a formal grammar and which cannot be changed using the rules of the grammar. Applying the