👉 In mathematics, a "multispindle" is a type of object that has both a top and a bottom. It's a special kind of manifold or surface that can be described by two differential equations. For example, consider the cylinder with radius r and height h. The equation for this cylinder would be: \[ x^2 + y^2 = 4r^2 - xh \] This describes the top (height) and bottom (radius) of the cylinder.