Relations

In this video, we discuss the notion of a relation, which is a subset of the Cartesian product. Some examples are discussed.

[BenHutchison]

Hi Andrew,

First up, thank for for putting your lectures out freely. I find it some of the clearest and most articulate math content available online. You clearly take pride in your work.. it is appreciated 🙏

However, I do find navigation of the courses difficult (and frustrating tbh), for several reasons.

One is that the playlists do not seem to align with the linear order of the lectures. For example, this lecture finishes with you saying "next up, well look at the properties of relations". But the next video in the list is "combining proof techniques", which is from a different topic. The subsequent lecture is actually 3 lectures along in the playlist.

The second reason is Youtubes search functionality seems "deliberately blunt", and quite unsuitable for research and technical use. I'll be searching using maths terminology and it will offer a yoga video, because I watched one last week! I wish there was a way to turn recommendation mode off when searching and get results strictly related to the search terms. Anyway, no easy answers to that problem... 😖