Wikipedia shows this pair of photographs of a man, taken in 1953. They are police mug shots: The man seems to have had a peculiar haircut, one that looks very different from the sides than from the front. From the front there is a strong, tripartite geometric regularity evident to the top third of his […]
Tag: geometry
How to make a moebius bagel
George W. Hart devised an elegant, mathematical way to slice a bagel [AIR 16:1]: It is not hard to cut a bagel into two equal halves which are linked like two links of a chain. The line ABCDA, which goes smoothly through all four key points, is the cut line. As it goes 360 degrees […]
GeoCrypt
The best-named scientific conference of the year, so far, is the GeoCrypt conference: The GeoCrypt 2009 conference will take place at Hôtel Fleur d’Épée (Le Gosier), about 6km from Pointe-à-Pitre, Guadeloupe, French West Indies [from April 27-May 1]… The purpose of the conference is to bring together researchers from arithmetic geometry and from cryptography and […]