Comments on: Two things I don’t know http://threesixty360.wordpress.com/2009/11/02/two-things-i-dont-know/ 12 tables, 24 chairs, and plenty of chalk Tue, 07 May 2013 17:42:45 +0000 hourly 1 http://wordpress.com/ By: Ξ http://threesixty360.wordpress.com/2009/11/02/two-things-i-dont-know/#comment-10111 Tue, 03 Nov 2009 09:03:23 +0000 http://threesixty360.wordpress.com/?p=2898#comment-10111 Thanks Shreevatsa! That’s what I was looking for [and feel like I should have found -- I made the mistake of using Google didn't think of Google books until I'd already been searching for a while]! I’m happy to see that it looks pretty much identical to Knuth’s signs.

]]> By: Shreevatsa http://threesixty360.wordpress.com/2009/11/02/two-things-i-dont-know/#comment-10110 Tue, 03 Nov 2009 04:50:36 +0000 http://threesixty360.wordpress.com/?p=2898#comment-10110 It is possible that both Bourbaki’s and Knuth’s symbols are inspired by actual signs in the real world: Knuth is known to be interested in diamond-shaped road signs.

The Bourbaki symbol seems very similar but slightly different in orientation, see e.g. this page or this page. (Both are translations, so there is a small probability that the French originals were typeset differently.)

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