Mapping/Examples/Age of Person

Example of Mapping

Let $P$ be the set of all people.

Let $\theta: P \to \Z$ be the mapping defined as:

$\forall x \in P: \map \theta x = \text { the age of $x$ last birthday}$

Sources

• 1965: J.A. Green: Sets and Groups ... (previous) ... (next): $\S 3.1$. Mappings: Example $43$