And depending on what audience you're writing for, you might want to say something about the prerequisites. This article didn't (maybe the blog is read mostly b

And depending on what audience you're writing for, you might want to say something about the prerequisites. This article didn't (maybe the blog is read mostly by mathematicians or maths students; the author is not necessarily delinquent in their duties). But given that, I outlined some prerequisites so that readers here know what to expect.