Author Archives: Brian Hayes

About Brian Hayes

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The short arm of coincidence

James Tanton tosses off number theory problems the way John D. Rockefeller handed out dimes. I wrote about one of Tanton’s problems back in January. Then a few weeks ago this tweet about factorials and squares snagged my attention, and … Continue reading

Posted in computing, featured, mathematics, problems and puzzles | 14 Comments

The uniqueness constraint

For the past few weeks the Sunday New York Times has been publishing a puzzle called Capsules, devised by Wei-Hwa Huang. Here are the instructions: Place numbers in the grid so that each outlined region contains the numbers 1 to … Continue reading

Posted in problems and puzzles | 17 Comments

A Tantonalizing Problem

In times like these one craves distraction, or maybe anaesthesia. On the whole, mathematics is better for you than ethanol, and you can even do it while driving. So in spare moments I’ve been noodling away at the following problem, … Continue reading

Posted in mathematics, problems and puzzles | 7 Comments

The Polite Apocalypse

I’ve been rereading On the Beach, Nevil Shute’s novel about humanity’s last gasp in the aftermath of a nuclear war. The book was published 60 years ago, in 1957. I first read it in 1963, which is roughly when the … Continue reading

Posted in off-topic | 2 Comments

Joint Mathematics Morsels

Atlanta. I’m at the Joint Mathematics Meetings, the annual smorgasbord where I never have time to fully digest my helping of algebraic geometry before I move on to a desert of cohomology. Here are a few easily swallowed morsels. Carey’s … Continue reading

Posted in mathematics | 1 Comment