JD

Author

John Derbyshire

/john-derbyshire-quotes-and-sayings

8 Quotes
3 Works

Author Summary

About John Derbyshire on QuoteMust

John Derbyshire currently has 8 indexed quotes and 3 linked works on QuoteMust. This page is the canonical destination for that author archive.

Works

Books and titles linked to this author

Fire from the Sun Prime Obsession: Bernhard Riemann and the Greatest Unsolved Problem in Mathematics We Are Doomed: Reclaiming Conservative Pessimism

Quotes

All quote cards for John Derbyshire

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As a result of these news stories, millions of people must have become aware of "niggardly," who otherwise would never have heard it, let alone thought to use it. If this is right, and the word has a new currency, it is probably not the currency I would wish for. The word's new lease of life is probably among manufacturers and retailers of sophomoric humor. I bet that even as I write, some adolescent boys, in the stairwell of some high school somewhere in America, are accusing each other of being niggardly, and sniggering at their own outrageous wit. I bet _ Wait a minute. Sniggering? Oh, my God _

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Mathematicians call it __he arithmetic of congruences._ You can think of it as clock arithmetic. Temporarily replace the 12 on a clock face with 0. The 12 hours of the clock now read 0, 1, 2, 3, _ up to 11. If the time is eight o__lock, and you add 9 hours, what do you get? Well, you get five o__lock. So in this arithmetic, 8 + 9 = 5; or, as mathematicians say, 8 + 9 _ 5 (mod 12), pronounced __ight plus nine is congruent to five, modulo twelve.

JD
John Derbyshire

Prime Obsession: Bernhard Riemann and the Greatest Unsolved Problem in Mathematics