ThmDex – An index of mathematical definitions, results, and conjectures.
Set of symbols
Alphabet
Deduction system
Theory
Zermelo-Fraenkel set theory
Set
Binary cartesian set product
Binary relation
Map
Countable map
Array
Matrix
Definition D103
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.