ELI5: Explain Like I'm 5

Category of topological spaces

Okay kiddo, so let's talk about a category of topological spaces!

First, we need to understand what a topological space is. It's kind of like a shape or an object, but we also know how it's connected - like if it has holes or if we can stretch parts of it without changing its basic shape. So we use something called topology to describe how all the parts fit together.

Now, a category is a way of grouping things that have something in common. In this case, all the things in the category of topological spaces are shapes or objects that we know the topology of.

We can think of it like a big bin of toys. We have all sorts of toys in the bin, but we can group some of them together based on what they're made of. For example, we could group all the wooden toys together in one pile, and all the plastic toys in another pile.

In the category of topological spaces, we're grouping shapes or objects together based on what we know about their topology. So all the shapes that have one hole in them are in one group, and all the shapes with two holes in them are in another group, and so on.

And just like we can do things with the toys in each pile - like play with them or sort them further - we can also do things with the objects in each group in the category of topological spaces. We can study their properties and see how they're related to each other.

So that's a category of topological spaces - a way of grouping shapes or objects based on what we know about their topology, and a way to study their properties and relationships.