Category Archives: computing

Number Factoids

The web sites numbersaplenty.com and numberworld.info dish up a smorgasbord of facts about every natural number from 1 to 999,999,999,999,999. Type in your favorite positive integer (provided it’s less than 1015) and you’ll get a list of prime factors, a … Continue reading

Posted in computing, mathematics | 8 Comments

Deep Dreaming with Every Card I Write

My closest friends and family must make do with an old-fashioned paper-and-postage greeting card, but for bit-player readers I can send some thoroughly modern pixels. Happy holidays to everyone. In recent months I’ve been having fun with “deep dreaming,” the … Continue reading

Posted in computing, off-topic | 6 Comments

The long run

The other day I went over to Danehy Park in Cambridge, which has a fine 400-meter running track. I did four laps at my usual plodding pace. Here is my path, as recorded by an iPhone app called Runmeter: No, … Continue reading

Posted in computing, mathematics | 13 Comments

Pumping the Primes

On your desktop is a black box. Actually it’s an orange box, because black boxes are usually painted “a highly visible vermilion colour known as international orange.” In any case, it’s an opaque box: You can’t see the whirling gears … Continue reading

Posted in computing, mathematics | 11 Comments

Gazing into the CodeMirror

Marijn Haverbeke is a programmer based in Berlin whose book Eloquent JavaScript is freely available on the Web and published in various other formats by No Starch Press. It’s a fine book, and I warmly recommend it. Buying a copy … Continue reading

Posted in computing | 2 Comments