Pascal's theorem: Difference between revisions

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A short elementary proof of Pascal's theorem in the case of a circle was found by {{harvtxt|van Yzeren|1993}}, based on the proof in {{harv|Guggenheimer|1967}}. This proof proves the theorem for circle and then generalizes it to conics.
 
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A short elementary computational proof in the case of the real projective plane was found by {{harvtxt|Stefanovic|2010}}