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Meta
Category Archives: mathematics
Doctor Matrix’s little helpers
Ed Pegg writes: I’d like to do a “behind the scenes” look at Mathematical Games for an article. Martin [Gardner] did lots, but he avidly used a lot of help from hundreds of people. I’d like to write an article … Continue reading
Posted in eye-candy, mathematics
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Randome
Dick Fischbeck has a new website for a kind of structure that he calls Randome, formed of overlapping shallow cones.
Posted in mathematics
1 Comment
all of you, you’re nothing but random seeds!
On BART today, a fellow passenger saw me making notes on paper and occasionally looking up, and got the idea that I was taking statistics on the passengers. No, I said, I’m doing math for my own entertainment. He sat … Continue reading
Posted in California, mathematics, me!me!me!
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squished hypertorus
This is intended to be an orthographic projection of a stereographic projection from S5 (the five-dimensional surface of a sphere in six-dimensional space) into E5 (flat five-space) of the cartesian product S2 × S2, a kind of torus. The colors … Continue reading
Posted in eye-candy, mathematics
2 Comments
two dimensions of opinion
In November I linked to a “Political Compass” and mentioned some improvements I’d like to see. Chris Lightfoot apparently had already made them. Rather than assigning preconceived interpretations to the questions, Lightfoot waited until a large number of people had … Continue reading
Posted in mathematics, politics
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not a butterfly’s wing
Voronoi cells of nodes of the golden sector spiral, colored according to three different cycles (one for each primary), all with irrational periods.
Posted in eye-candy, mathematics
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