I missed getting an entry into the latest Carnival of Mathematics, which went up a day early at Science and Reason. (Serves me right for procrastinating!)

As usual, most of the articles are well over my head.

The carnival begins with a tribute to Field’s Medalist Paul Cohen (April 2, 1934 – March 23, 2007), the man who settled the first of the famous Hilbert Problems, the Continuum Hypothesis. Then come the math articles.

Here are my favorites:

- How Dr. Seuss would prove the halting problem undecidable

In which we find a delightful informal proof that the Halting Problem is undecidable. Wouldn’t it be fun if all math proofs could be written in Dr. Seuss-style verse?</

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- The old new math

In which JD teaches his algebra class a bit of twentieth-century history. If you aren’t familiar with Jonathan’s blog, be sure to spend some time browsing his “puzzle” posts.