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Dec 18, 2009 at 15:11 vote accept CommunityBot
Dec 18, 2009 at 4:07 comment added Joseph Malkevitch What page in Grunbaum's Convex Polytopes (1st edition)? Pg. 173 of Ziegler's Lectures on Polytopes, 1st edition?
Dec 18, 2009 at 3:55 comment added David E Speyer Yeah, and it's also missing from the google books version of Ziegler's book. Page 173, for those who own a physical copy.
Dec 18, 2009 at 3:45 comment added Mariano Suárez-Álvarez There is a small example of an arrangement of lines which requires a quadratic surd in the field in Grünbaum's book on convex polytopes. Google book does not have the page, afaict.
Dec 18, 2009 at 3:41 history answered David E Speyer CC BY-SA 2.5