Definition:Power


 * Power (Algebra): $$x^y$$ is the $$y$$th power of $$x$$.
 * Power of an Element: the same concept in Abstract Algebra.
 * Powers of Group Elements: the same concept in Group Theory.
 * Power of a Set: Another name for the cardinality of a set.

Also see

 * Power set: the set of all subsets of a given set.