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Meta
Category Archives: mathematics
kissing spheres
Er, whatever you say there, Swen. Glad to know someone is still watching.
Posted in eye-candy, mathematics
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Dandelin spheres
Hop David illustrates and animates some theorems about conics.
Posted in eye-candy, mathematics
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life in n-space
Ever since reading Greg Egan’s novel Diaspora (1998), part of which takes place in a five-dimensional universe, I’ve occasionally tried to imagine aspects of life in higher spaces (which is tricky, as I lack the knack of visualizing in such … Continue reading
Posted in mathematics
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Computer Graphics and Geometric Ornamental Design
Craig Kaplan writes: Whenever possible, one’s thesis should be write-only. Nevertheless, I understand if once in a while a visitor to this page may choose to read what I’ve written.
Posted in eye-candy, mathematics
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spheres subtracted
Hyperbolic geometry, provoked by “Not Knot”. The shape at the end of that show is an ideal rhombic dodecahedron (‘ideal’ means some of its vertices are at infinity) seen from inside; here it is seen from outside, in the Poincaré … Continue reading
Posted in mathematics
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first they mock . .
Well well! Robin Hanson’s concept of idea futures is discussed today (though not by that name) in the New York Times: A Market Approach to Politics
Posted in economics, mathematics, politics
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that symmetry guy
The eminent geometer HSM (Donald) Coxeter of Toronto died a few days ago, aged 96 years. His book Regular Polytopes (1963) sits on my reference shelf. For you non-mathematical types, it was Coxeter who sent MC Escher an article on … Continue reading
Posted in arts, mathematics
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