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
Function
Real collection function
Euclidean real function
Real function
Definition D4947
Rational function
Formulation 0
Let $\mathbb{Q}$ be the D368: Set of rational numbers.
A D18: Map $f : X \to Y$ is a rational function if and only if \begin{equation} Y \subseteq \mathbb{Q} \end{equation}
Children
D4948: Integer function