Definition:Commensurable in Square

Definition
Let $a, b \in \R_{>0}$ be (strictly) positive real numbers.

Then $a$ and $b$ are commensurable in square iff $\left ({\dfrac a b}\right)^2$ is rational.



Also see

 * Definition:Commensurable
 * Definition:Incommensurable


 * Definition:Incommensurable in Square