A reducible fraction is a fraction such that , i.e., can be written in reduced form. A fraction that is not reducible is said to be irreducible.

For example, in the complex plane, is reducible, while is not.

A reducible fraction is a fraction such that , i.e., can be written in reduced form. A fraction that is not reducible is said to be irreducible.

For example, in the complex plane, is reducible, while is not.

Weisstein, Eric W. "Reducible Fraction."
From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/ReducibleFraction.html