The Unimaginable Mathematics of Borges' Library of Babel

The Unimaginable Mathematics of Borges' Library of Babel, reviewed at The Complete Review.

Sounds rather interesting:

The first point is the amusingly obvious one: that no matter how small the books in the Library, there isn't nearly enough room in the actual universe to contain the library Borges envisioned (and that's just taking into account the books, not the structure that houses them ...). From the very large, Bloch moves to the infinitely small (well, thin), addressing the footnote that suggests a single volume could contain all that the Library holds -- if it had "an infinite number of infinitely thin pages") -- and demonstrating the somewhat surprising (mathematical) dimensions of such a volume.

And from the same review, sounds like the prof needs a blog:

Bloch seems to mean it when tries to get the reader involved, going so far as to provide not only an 'Annotated Suggested Readings'-list, but inviting readers to e-mail him for "more personalized recommendations" (include: "your math background and the things you'd like to learn").