It is a pair of elements in which their order of appearance is insignificant.
An unordered pair with the elements and can be represented as .
Note that is the same as , because the order is insignificant.
May 20, 20251 min read
It is a pair of elements in which their order of appearance is insignificant.
An unordered pair with the elements a and b can be represented as {a,b}.
Note that {a,b} is the same as {b,a}, because the order is insignificant.