Set-Builder Notation looks like this. Denotes is not an element of or is not a member of or does not belong to. The ordered-pair numbers become x f x.
We can list the elements in any order and we can list elements more than once.
SETS AND SET NOTATION A SET is a collection of items. X Z x 2 m 1 m Z mathbf color purple x in mathbb Zmid x 2m 1 m in mathbb Z x Z x 2m1 m Z. We use the symbol to indicate that an object belongs to a set and the symbol to indicate that an object does not belong to a set. Symbols save you space when writing and.