Writing | |
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On the divided line from ’s Republic A proof that the middle segments are always equal, in the style of Euclid. |
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’s proof of a minimum property of the orthic triangle A visual proof, intended for non-mathematicians. |
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Errata for ’s Symmetry A guide for Weyl’s magnificent book. |
Translation | |
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Review of
– ’s Géométrie descriptive A magisterial discussion of geometry. |
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On the analog of crystallographic symmetry in the plane
– Pólya’s lively 1924 article on the classification of wallpaper groups. |
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World record surfaces: algebraic surfaces with many singularities
– A semi-popular expository article with very many pictures. |