more from Herbert B. Enderton

### Single Idea 9706

#### [catalogued under 4. Formal Logic / F. Set Theory ST / 2. Mechanics of Set Theory / b. Terminology of ST]

Full Idea

A 'function' is a relation which is single-valued. That is, for each object, there is only one object in the function set to which that object is related.

Gist of Idea

A 'function' is a relation in which each object is related to just one other object

Source

Herbert B. Enderton (A Mathematical Introduction to Logic (2nd) [2001], Ch.0)

Book Reference

Enderton,Herbert B.: 'A Mathematical Introduction to Logic' [Academic Press 2001], p.5