Examples
Let n be the finite set {1, 2, …, n}, where n is a positive integer.
- An ordered pair is a family indexed by the two element set 2 = {1, 2}.
- An n-tuple is a family indexed by n.
- An infinite sequence is a family indexed by the natural numbers.
- A list is an n-tuple for an unspecified n, or an infinite sequence.
- An n×m matrix is a family indexed by the cartesian product n×m.
- A net is a family indexed by a directed set.
Read more about this topic: Indexed Family
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