There are integral heptagons, no three points on a line, no four on a circle

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dc.creatorKreisel, Tobias
dc.creatorKurz, Sascha
dc.date2008-04-08
dc.date.accessioned2026-07-07T09:31:05Z
dc.date.available2026-07-07T09:31:05Z
dc.descriptionWe give two configurations of seven points in the plane, no three points in a line, no four points on a circle with pairwise integral distances. This answers a famous question of Paul Erdős.
dc.description4 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/0804.1303
dc.identifierhttp://arxiv.org/abs/0804.1303
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/158335
dc.subjectCombinatorics
dc.subject52C10 (Primary);52C35,52-04,52A99,51K99 (Secondary)
dc.titleThere are integral heptagons, no three points on a line, no four on a circle
dc.typetext

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