Willem F Esterhuyse Posted February 12, 2023 Share Posted February 12, 2023 I've read a paper wherein there is a definition and formula amounting to "there exist some y an element of the Empty Set". This is nonsensical because Empty Set = {x: x not= x}. there is no "y not= y". Link to comment Share on other sites More sharing options...
swansont Posted February 12, 2023 Share Posted February 12, 2023 2 hours ago, Willem F Esterhuyse said: I've read a paper What paper? Link to it, or quote a larger section, so that people can read the context of the statement. Link to comment Share on other sites More sharing options...
wtf Posted February 12, 2023 Share Posted February 12, 2023 9 hours ago, Willem F Esterhuyse said: I've read a paper ... Did it come on a roll? Link to comment Share on other sites More sharing options...
Willem F Esterhuyse Posted February 13, 2023 Author Share Posted February 13, 2023 (edited) Ha, ha. I can't quote it because it is in non ASCII letters. Paper: "The Foundations of Mathematics.pdf" at www.academia.edu. I was mistaken, it does not say that. Edited February 13, 2023 by Willem F Esterhuyse Link to comment Share on other sites More sharing options...
Sensei Posted February 13, 2023 Share Posted February 13, 2023 4 minutes ago, Willem F Esterhuyse said: I can't quote it because it is in non ASCII letters. You can press "print screen" and attach image instead. Link to comment Share on other sites More sharing options...
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