▾ Set of symbols
▾ Alphabet
▾ Deduction system
▾ Theory
▾ Zermelo-Fraenkel set theory
▾ Set
▾ Binary cartesian set product
▾ Binary relation
▾ Map
▾ Countable map
▾ Array
▾ Matrix
Finite matrix
Formulation 0
A D102: Matrix $x : J \to X$ is a finite matrix if and only if $J$ is a D17: Finite set.