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The ā„ ā entry in the "advanced and rarely used symbols". I have never seen ā„ used that way. In every textbook I have seen, ā„ means "false". So I think this entry confuses people who would read this page. Also it's redundant because there is already an entry for Pierce's arrow ā.
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added a number of what are supposedly rarely used logical symbols, but I can't seem to find any support for many of them actually being used in the way he described them at all. I propose removing the entire section unless he or someone else can find some sources for them.
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I have found the source. Apparently they come from unicode tables. I'm not 100% sure that whoever wrote those descriptions for the unicode table actually understood the symbols, but they at least aren't uncorroborated fictions.
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