This content can be improved in at least two ways. The first is fairly superficial: There needs to be a standardization in things like the italicization of variable names and newly introduced terms. The second is more substantive: The language needs to be cleaned up a bit. Some of it reads like it was assembled from pieces by someone unfamiliar with the content. In particular, infinity is talked about in ways that make a math major uneasy. I've made some of the necessary corrections, but would want to go through the text more thoroughly and thoughtfully.