Set

{ }

Definition
A set is a collection of distinct objects, considered as an object in its own right.
Usage
Sets are used to group objects and are fundamental to many areas of mathematics.
Examples
  • Set of integers
    \mathbb{Z} = {\ldots, -2, -1, 0, 1, 2, \ldots}
  • Set-builder notation
    A = \{x \in \mathbb{R} | x^2 < 4\}
Related Concepts
function, relation, cardinality