Beyond searching, Boolean logic is commonly used in spreadsheet applications like Excel to do conditional calculations. A statement is something that is either true or false. A statement like 3 < 5 is...Beyond searching, Boolean logic is commonly used in spreadsheet applications like Excel to do conditional calculations. A statement is something that is either true or false. A statement like 3 < 5 is true; a statement like “a rat is a fish” is false. A statement like “x < 5” is true for some values of x and false for others. When an action is taken or not depending on the value of a statement, it forms a conditional.
In every branch of Mathematics there are special, atomic, notions that defy precise definition. In Geometry, for example, the atomic notions are points, lines and their incidence. The atomic concepts ...In every branch of Mathematics there are special, atomic, notions that defy precise definition. In Geometry, for example, the atomic notions are points, lines and their incidence. The atomic concepts in Set Theory are “set”, “element” and “membership”. The atomic concepts in Logic are “true”, “false”, “sentence” and “statement”. Regarding true and false, we hope there is no uncertainty as to their meanings.