Boolean

One of Java's primitive types. The boolean type has only two values: true and false.

Refers to an expression or variable that can have only a true or false value. The Java programming language provides the boolean type and the literal values true and false.

Boolean logic (named for the British-born Irish mathematician George Boole) is way to express relationships in logic arguments using the following three operators: "and", "or", "not".

The patent search systems use "AND", "OR", and "ANDNOT" as Boolean operators, in combination with parentheses to build nested logical subsets - example: needle ANDNOT ((record AND player) OR sewing), which would return anything with the word "needle" in a document as long as it does not also contain the word "record" and "player" in the same document or the word "sewing" in the same document. . It also uses some symbols such as "->" to indicate a range, where you enter the field code and start date, ->, and then the end date - example: ISD/1/1/1995->2/14/1995.

-- see help for patent searches for more on how to use Boolean operators in a patent search

A value that is either "true" or "false".