Talk:Johnston diagram

Who were they named after?
Who were Johnston diagrams named after? Was it the British logician William Ernest Johnson? Note the different spelling. See Scientific phenomena named after people. DFH 12:36, 7 August 2006 (UTC)

If you click on the logic tutorial link it is credited to Russell Johnston.


 * Which logic tutorial link? --Lambiam 20:07, 23 January 2008 (UTC)

WikiProject class rating
This article was automatically assessed because at least one WikiProject had rated the article as start, and the rating on other projects was brought up to start class. BetacommandBot 04:11, 10 November 2007 (UTC)

Difference with Venn diagrams
Is the only difference with Venn diagrams that the overlap of the circles represents A∧B instead of A∩B? --Lambiam 21:37, 23 January 2008 (UTC)

Deletion rationale

 * This is how the article was started in 2002, by an IP (207.6.192.108) which now resolves to British Columbia.
 * The original stub basically explains that Johnston diagrams are exactly the same thing as Venn diagram, only for propositional logic instead of set theory.
 * The original stub links to [logictutorial.com], a site registered by Russell Johnston in British Columbia.
 * Regardless of whether the idea of renaming Venn diagrams when using them for propositional logic has any merit (I don't think so), it certainly makes no sense to name them after the author of this dubious site.
 * The article has been tagged as completely unreferenced for 2 1/2 years, since November 2006.
 * The article has been tagged as orginal research for 1 1/2 years, since January 2008.

Consequently, I am prodding this article. --Hans Adler (talk) 23:25, 1 June 2009 (UTC)