If you were to "map" mathematics onto a tree structure where the top is "Mathematics", and then below it the different branches, then sub-branches, etc.
What do you suggest is a good structure, for educational purposes? The idea is this - if I have a student learning a topic, then all I would have to do is look at all the sub-branches (and theirs) below that topic in the tree, to represent everything the student needs to know.
I'm certain there will be overlaps, but I'm okay with this - looking for some insight on this, or relevant articles.
If you think that such a hierarchy does not even exist, please let me know what you think the right structure is for educational purposes, and if you know where to find it.