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Today’s Crossword Delight

Swiss 10-franc banknote

I had a happy surprise last night when I did today’s NYT crossword. (If you haven’t done it yet but anticipate getting to it later, read no further until you’re done.)  The clue for 5-across is “Subject with limits and functions, informally,” with the not-so interesting answer ‘calc’.  But this set up up 45-across:  “Swiss 5-across pioneer,”  the answer (of course) being my favorite mathematician, Euler.  How can I not love a crossword with Euler in it?

It’s a continuing source of wonder and sadness to us mathematicians that geniuses such as Euler are largely unknown.  If he were a composer, he would be Bach. If he were a baseball player, he would be Cobb.  But he’s a mathematician, and a cipher, except at least in Switzerland, where he is a familiar figure.  (See above.)

This short biography gives some sense of his greatness. Have a look. And next time you see mention in a crossword of a Swiss mathematician, remember Euler.

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Categories: Crosswords, Math
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