# Monthly Archives: February 2013

## A Book Review of Count Down: The Race for Beautiful Solutions at the IMO

I read a lot of popular science and math books. Scientific and mathematical exposition to the public is a fundamental task that must be done; but for some reason, it is simply not getting done well enough. One day, perhaps I’ll write expository (i.e. for non-math folk) math. But until then, I read everything I can. I then thought that if I read them all, I should share what I think.

Today, I consider the book Count Down: The Race for Beautiful Solutions at the International Mathematics Olympiad, by Steve Olson. The review itself can be found after the fold (more…)

Posted in Book Review, Mathematics | | 2 Comments

## Hurwitz Zeta is a sum of Dirichlet L Functions, and vice-versa

At least three times now, I have needed to use that Hurwitz Zeta functions are a sum of L-functions and its converse, only to have forgotten how it goes. And unfortunately, the current wikipedia article on the Hurwitz Zeta function has a mistake, omitting the $varphi$ term (although it will soon be corrected). Instead of re-doing it each time, I write this detail here, below the fold.
(more…)

Posted in Expository, Math.NT, Mathematics | | 1 Comment