Fermat’s Last Theorem on the Subway Wall


When Pierre de Fermat conjectured his last theorem, of which what would be known as the Fermat’s Last Theorem, in 1637, he only wrote it on the margin of his copy of Arithmetica. He claimed that he knew the proof, but it was too large to fit in the narrow margin.

H. H. Wu, mathematician and professor emeritus at Berkeley, related that he saw the following writing on the wall of a subway station in New York City:

I have just found a truly marvelous proof of Fermat’s Last Theorem. But the train is coming and I don’t have time to write it down.


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My name Edmark M. Law. I work as a freelance writer, mainly writing about science and mathematics. I am an ardent hobbyist. I like to read, solve puzzles, play chess, make origami and play basketball. In addition, I dabble in magic, particularly card magic and other sleight-of-hand type magic. I live in Hong Kong. You can find me on Twitter` and Facebook. My email is edmarklaw@learnfunfacts.com

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