Circular reasoning: who first proved that C/d is a constant?

I just uploaded an article “Circular reasoning: who first proved that  is a constant?” to the arXiv. The abstract is below. It is on a topic that I’ve been thinking about and reading about off-and-on for the last year and a half. I’d be happy to hear people’s thoughts, reactions, and impressions. Abstract. We answer the…

What do you want on your tombstone?

I’ve come across a few mathematicians or scientists who have been so proud of their scholarly achievements that they’ve asked for them to be put on their headstone when they die (or have had their achievements placed on their headstones by someone else). Please let me know if you know of others. [Update: thanks to…

Circle squaring limerick

I found this nice limerick on Charles Petzold’s blog: Said the man about town, ‘I have a flair For squaring the circle, I swear.’ But he found that the strain Was too great for his brain, So he’s gone back to circling the square. Petzold has a scan of the title page of E. H….