Set Theory - Bijection function (One-to-one relationship)
- each element of one set is paired with exactly one element of the other set,
- each element of the other set is paired with exactly one element of the first set.
- there are no unpaired elements
This function is also known as:
- the one-to-one relationship
- or invertible function
- A bijection (Ref
- Not a bijection
A function f: R → R is bijective if and only if its graph meets every horizontal and vertical line exactly once.