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7:54 AM
It seems that the picture link in Joel David Hamkin's answer "Is “ultracompact” taken?" no longer works.
The two last links to the picture boolesrings.org/perlmutter/files/2013/04/ChartForWebSite.jpg are broken. (Maybe somebody knows what post they are taken from and they are still available somewhere online.) However, the picture is available in the Wayback Machine. — Martin Sleziak 1 min ago
 

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