* Minimum of a set: The smallest number in a finite set. For example, the minimum of the set {3, 1, 7, 2} is 1.
* Global minimum of a function: The smallest value the function attains over its entire domain.
* Local minimum of a function: The smallest value the function attains within a particular neighborhood or interval. A local minimum might not be the global minimum.
The context is important in determining the precise meaning of "minimum."