In mathematics and philosophy, Cartesian refers to the system of coordinates established by René Descartes.

Descartes developed the Cartesian coordinate system, also known as the rectangular coordinate system, as a way to represent points and geometric figures in space.
The Cartesian system consists of two or three perpendicular axes, usually labeled as x, y, and z, which intersect at a common point called the origin.
It provides a framework for representing the position, direction, and size of objects in a mathematical space.