Definition:Rational Point in Plane
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Definition
Consider the Cartesian plane $\R^2$.
The points $\tuple {x, y} \in \R^2$ such that $x, y \in \Q$ are called the rational points (of $\R^2$).
Also known as
A rational point can also occasionally be seen referred to as a rational lattice point, but this is rare, and may easily cause confusion with the concept of a lattice point.
Sources
- 1992: George F. Simmons: Calculus Gems ... (previous) ... (next): Chapter $\text {B}.17$: More About Irrational Numbers. $\pi$ is Irrational