ELI5: Explain Like I'm 5

Rational hull

Alright buddy, let's talk about the rational hull. Imagine you have a bunch of points on a piece of paper. These points can be anywhere you want, like stars in the sky.

Now, think about drawing lines between these points. It's like connecting the dots with lines. The rational hull is like the shape or space that all of these lines make.

But here's the special thing about the rational hull: it only considers rational numbers. Whoa, what are rational numbers, you ask? Well, they are numbers that can be written as a fraction, like 1/2 or 3/4. So the rational hull only wants to connect points using these kinds of numbers.

So, imagine you have some points on your paper and you draw lines between them, but only using rational numbers. Those lines will make the shape of the rational hull. It might look like a bunch of line segments or a weird squiggly shape, depending on how your points are arranged.

The rational hull is pretty cool because it helps us understand how points are connected using only fractions. It's like a special way of looking at those points and the lines between them.