Definition:Pisot-Vijayaraghavan Number

Definition
Let $\alpha$ be a real algebraic integer greater than $1$.

Let $\alpha$ be such that the absolute values of its Galois conjugates are all less than $1$.

Then $\alpha$ is a Pisot-Vijayaraghavan number.

Also known as
A Pisot-Vijayaraghavan number is also known as:
 * a Pisot number
 * a PV number.

Also see

 * Definition:Plastic Constant