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I've just changed the first paragraph, which did call symmetric difference the "set-theoretic equivalent" of exclusive disjunction. For me, that's too much abuse of terminology (viz. equivalent), especially in an article on a mathematical topic. So I've merely replaced equivalent with kin. My replacement is no less vague, but at least its imprecision is more above board.—PaulTanenbaum (talk) 13:03, 28 January 2008 (UTC)
Does anyone have references to where to find this in the (printed) literature ? Who first introduced the symmetric difference (pseudo)metric? —Preceding unsigned comment added by 193.190.253.149 (talk) 12:08, 21 May 2008 (UTC)
Does anyone know which of the two symbols is more commonly used? – Fuzzy – 13:09, 17 August 2011 (UTC)
Can someone source and make more precise the statements in relation to multisets. They were state with "is" which was obviously an abuse of language, so I've changed it to "equivalent". But in what precise (say categorical) sense are these equivalent? 86.127.138.67 (talk) 16:56, 9 April 2015 (UTC)
This edit by DanBLOO replaced the consistent use of the LaTeX command \triangle () with consistent use of the LaTeX command \Delta (). I am not particularly convinced this is correct, but not skeptical enough to simply revert. Unfortunately the article has no good sources that discuss the notation or its history (in contrast with, say, Empty set). Thoughts? --JBL (talk) 17:18, 2 July 2023 (UTC)
I have found MathWorld to have errors too often. I can't say it is a reliable source. In particular it's not accurate for notations for symmetric difference; e.g., it says[1] "All but [] should probably be deprecated", which is nonsense; that notation is uncommon while others are common. I am removing it as a source. A reliable source would be a good textbook, for example. Zaslav (talk) 06:16, 30 September 2023 (UTC) Zaslav (talk) 06:16, 30 September 2023 (UTC)
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