Exponentiation
When it is a positive integer, the exponent indicates how many copies of the base are multiplied together. For example, . The base appears times in the repeated multiplication, because the exponent is . Here, is the "base", is the "exponent", and is the "power" or, more specifically, "3 raised to the 5th power".
Exponentiation
For an infinite cardinal number κ and a set "A", the notation "A" is also used to denote the set of all functions from a set of size κ to "A". This is sometimes written "A" to distinguish it from cardinal exponentiation, defined below.