What does 'in geometry' mean in this context? There are numbers which are not co... | Hacker News

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		nimonian on Feb 14, 2019 \| parent \| context \| favorite \| on: Logical difficulties in modern mathematics (2012) What does 'in geometry' mean in this context? There are numbers which are not constructible with compass and straight-edge constructible but which are constructible by other means (e.g. 2^(1/3) is origami constructible).

umanwizard on Feb 14, 2019 [–]

That's why I said "classical geometry" instead of just "geometry" - I meant Euclidean compass-and-straightedge.

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