BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Anna Theorin Johansson
DTSTART:20250925T143000Z
DTEND:20250925T150000Z
DTSTAMP:20260423T005657Z
UID:gbgphd/21
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/gbgphd/21/">
 Draw me if you can: Constructions with Euclidean tools</a>\nby Anna Theori
 n Johansson as part of Gothenburg PhD seminar\n\nLecture held in MVL14.\n\
 nAbstract\nHow much geometry can you squeeze out of a straightedge and com
 pass? Trisect an angle? Maybe not. Draw a regular 17-gon? Absolutely. The 
 ancient Greeks figured out how to draw sums\, differences\, products\, rat
 ios and square roots of given lengths\, as well as how to construct some g
 eometric figures from others\, but it took two millennia to finally comple
 tely close the case of constructible polygons. In this filler episode\, we
 ’ll cover the main ideas: which shapes can be drawn\, which can’t\, an
 d why.\n
LOCATION:https://researchseminars.org/talk/gbgphd/21/
END:VEVENT
END:VCALENDAR