ELI5: Explain Like I'm 5

Fixed-point property

Okay kiddo, so imagine you have a very special toy called a "fixed-point property." This toy has a power to stay in the same place no matter what you do to it! So no matter how much you twist, turn or flip it, it will stay in the same position.

Now imagine that you have a big piece of paper and you draw a bunch of dots on it. These dots represent different positions that the toy can move to. But here's the catch - the toy can only move to a dot if the dot is in the same place as the toy's fixed point!

So if you put the toy on one of the dots and try to move it to a different dot, it won't work if the new dot doesn't line up with the toy's fixed point. But if you do find a dot that does match up with the toy's fixed point, then you can move the toy to that new spot without any problem.

That's basically what the "fixed-point property" means, but instead of a toy, we're talking about numbers and instead of dots, we're talking about something called a "function." If a function has the fixed-point property, it means there is a number in the function that stays in place no matter what you do to the function. It's like the toy's fixed point - as long as you find the right spot in the function, you can move that number around without any trouble.

This fixed-point property is very important in math because it helps us understand how functions work and how we can use them to solve problems. So the next time you play with a toy that stays in place, remember that you already know about the fixed-point property!