File:Grünbaum-Rigby configuration.jpg

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English: The first known geometric 4-configuration, established by Grünbaum and Rigby in 1990
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Source This file was derived from: Grun rig.pdf
Author Tomo
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14 April 2019

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Date/TimeThumbnailDimensionsUserComment
current14:11, 18 May 2019Thumbnail for version as of 14:11, 18 May 2019275 × 275 (32 KB)David Levy{{Information |description = {{en|The first known geometric 4-configuration, established by Grünbaum and Rigby in 1990}} |date = 2019-04-14 |source = {{derived from|Grun rig.pdf}} |author = Tomo |permission = {{cc-by-sa-4.0}} {{GFDL|migration=redundant}} }} Category:Heptagrams Category:Incidence geometry