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 Definition:Variable whose domain is a singleton.

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:Constant (Physics)
 * Definition:Physical Constant


 * Definition:Variable