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Shouldn't this say "predicate calculus" instead of "propositional calculus"? Michael Hardy (talk) 03:07, 29 May 2009 (UTC)Reply
Pllllllausibly? I just kinda read about it in Halmos autobiography and got excited that there wasn't a page for it. I'm not even aware of anyone who isn't Halmos who did research into it. Pthag (talk) 21:15, 29 May 2009 (UTC)Reply