Exponentiation
Exponentiation is a mathematical operation, written as , involving two numbers, the "base" and the "exponent" . When is a positive integer, exponentiation corresponds to repeated multiplication of the base: that is, is the product of multiplying bases:
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.