|WikiProject Philosophy||(Rated Portal-class)|
File:Zellweger-LogicGarnet.jpg (by User:MargaretWertheim, who created the article Margaret Wertheim) is original research, as well as the Logic alphabet article about an unused notational system for logical connectives, promoted by quite exactly one homepage. If the articles Shea Zellweger and Logic alphabet are tolerated here, I don't care. But to use this file as a kind of introduction to the topic all over the logic portal is ridiculous. Until something better is found, I replace it by File:Logical connectives Hasse diagram.svg, showing the same content, but in a usual language and without chess figures (?!). Lipedia (talk) 20:06, 8 August 2009 (UTC)
Principia Mathematica date
I see this in the top-matter of the logic page.
- "In 1903 Bertrand Russell and Alfred North Whitehead attempted to establish logic as the cornerstone of mathematics formally with the publication of Principia Mathematica."
That isn't a good match for the publication dates 1910, 1912 and 1913. Given that this is in such a prominent position, someone surely must have checked the facts. Where does the 1903 date come from? — Preceding unsigned comment added by Alan U. Kennington (talk • contribs) 04:51, 15 September 2015 (UTC)
- @Alan U. Kennington: This seems to be a mixup with The Principles of Mathematics, which was published in 1903. Since Principia Mathematica is the more famous work, I've changed the date here to 1910. -- John of Reading (talk) 05:27, 15 September 2015 (UTC)
Thanks for that. As explained in the Principia Mathematica wikipedia page, the earlier solo work by Russell in 1903 had a causal relationship to the 3-volume 1910–1913 work by the two authors. The 1903 work was really more of an essay outlining the issues rather than the attempt to really establish the foundations fairly thoroughly as the 1910–1913 work did. So there are arguments for the idea that the work commenced in 1903. But all of these subtleties are irrelevant on such a prominent wikipedia page. In fact, the course of history was very much changed by Principia Mathematica, whereas The Principles of Mathematics was not much more than an essay reviewing the issues. Probably Peano's attempts at axiomatizing logic and set theory deserve more prominence than Russell/Whitehead on this logic portal page anyway, since Russell and Whitehead were in a sense filling in the details for the programme which Peano had outlined.
--Alan U. Kennington (talk) 05:45, 15 September 2015 (UTC)
Difficulty of requested articles on Portal
It might be worth grading these requested article. Some of these will serious pieces of work, like equivocity, others less so. scope_creep 18:10, 3 August 2016 (UTC)