Definition:Constant

Definition
A constant is a name for an object (usually a number, but the concept has wider applications) which does not change during the context of a logical or mathematical argument.

A constant can be considered as an operator which takes no operands.

A constant can also be considered as a variable whose domain is a singleton.

Also known as
A constant in an expression in algebra is also seen referred to as an absolute term.

In the same context, the term literal (constant) can sometimes be seen in order to differentiate it from a numerical constant

Also see

 * Definition:Proper Name (as used, usually, in the context of predicate logic)
 * Definition:Constant Mapping
 * Definition:Constant (Category Theory)
 * Definition:Constant Polynomial
 * Definition:Arbitrary Constant
 * Definition:Arbitrary Constant (Calculus)


 * Definition:Constant (Physics)
 * Definition:Physical Constant


 * Definition:Absolute Number


 * Definition:Variable