[FOM] Compass and straight edge constructions
Timothy Y. Chow
tchow at alum.mit.edu
Thu Sep 29 20:59:19 EDT 2016
Joe Shipman wrote:
> With standard origami folds you can solve cubics and quartics the same
> as with a marked ruler, but if you allow rolling of cones or cylinders
> you can n-sect angles for any n, and this get all algebraic numbers with
> abelian galois group by the Kronecker-Weber theorem.
With so-called origami "multifolds", we can get any algebraic number.
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