Finitely axiomatized conservative set theories












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Is it possible to finitely axiomatize any theory conservatively by some generally applicable trick?



Do the Gödel and Bernays trick work for any set theory like ZFC+large cardinal axioms?



Is it possible to finitely axiomatize some conservative extension of set theory without introducing a new sort (the class sort) or an additional predicate like Gödel's sethood?



Thank you.










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$endgroup$












  • $begingroup$
    What do you mean by Godel's set-hood?.....
    $endgroup$
    – DanielWainfleet
    Dec 17 '18 at 10:17










  • $begingroup$
    I mean his 1st-order (basic) predicate in the formulation of Bernays-Gödel-Neumann set theory. en.wikipedia.org/wiki/Von_Neumann–Bernays–Gödel_set_theory, while Bernays used different sorts of variables.
    $endgroup$
    – plm
    Dec 29 '18 at 11:55
















4












$begingroup$


Is it possible to finitely axiomatize any theory conservatively by some generally applicable trick?



Do the Gödel and Bernays trick work for any set theory like ZFC+large cardinal axioms?



Is it possible to finitely axiomatize some conservative extension of set theory without introducing a new sort (the class sort) or an additional predicate like Gödel's sethood?



Thank you.










share|cite|improve this question









$endgroup$












  • $begingroup$
    What do you mean by Godel's set-hood?.....
    $endgroup$
    – DanielWainfleet
    Dec 17 '18 at 10:17










  • $begingroup$
    I mean his 1st-order (basic) predicate in the formulation of Bernays-Gödel-Neumann set theory. en.wikipedia.org/wiki/Von_Neumann–Bernays–Gödel_set_theory, while Bernays used different sorts of variables.
    $endgroup$
    – plm
    Dec 29 '18 at 11:55














4












4








4


1



$begingroup$


Is it possible to finitely axiomatize any theory conservatively by some generally applicable trick?



Do the Gödel and Bernays trick work for any set theory like ZFC+large cardinal axioms?



Is it possible to finitely axiomatize some conservative extension of set theory without introducing a new sort (the class sort) or an additional predicate like Gödel's sethood?



Thank you.










share|cite|improve this question









$endgroup$




Is it possible to finitely axiomatize any theory conservatively by some generally applicable trick?



Do the Gödel and Bernays trick work for any set theory like ZFC+large cardinal axioms?



Is it possible to finitely axiomatize some conservative extension of set theory without introducing a new sort (the class sort) or an additional predicate like Gödel's sethood?



Thank you.







logic set-theory






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Dec 10 '18 at 15:23









plmplm

90849




90849












  • $begingroup$
    What do you mean by Godel's set-hood?.....
    $endgroup$
    – DanielWainfleet
    Dec 17 '18 at 10:17










  • $begingroup$
    I mean his 1st-order (basic) predicate in the formulation of Bernays-Gödel-Neumann set theory. en.wikipedia.org/wiki/Von_Neumann–Bernays–Gödel_set_theory, while Bernays used different sorts of variables.
    $endgroup$
    – plm
    Dec 29 '18 at 11:55


















  • $begingroup$
    What do you mean by Godel's set-hood?.....
    $endgroup$
    – DanielWainfleet
    Dec 17 '18 at 10:17










  • $begingroup$
    I mean his 1st-order (basic) predicate in the formulation of Bernays-Gödel-Neumann set theory. en.wikipedia.org/wiki/Von_Neumann–Bernays–Gödel_set_theory, while Bernays used different sorts of variables.
    $endgroup$
    – plm
    Dec 29 '18 at 11:55
















$begingroup$
What do you mean by Godel's set-hood?.....
$endgroup$
– DanielWainfleet
Dec 17 '18 at 10:17




$begingroup$
What do you mean by Godel's set-hood?.....
$endgroup$
– DanielWainfleet
Dec 17 '18 at 10:17












$begingroup$
I mean his 1st-order (basic) predicate in the formulation of Bernays-Gödel-Neumann set theory. en.wikipedia.org/wiki/Von_Neumann–Bernays–Gödel_set_theory, while Bernays used different sorts of variables.
$endgroup$
– plm
Dec 29 '18 at 11:55




$begingroup$
I mean his 1st-order (basic) predicate in the formulation of Bernays-Gödel-Neumann set theory. en.wikipedia.org/wiki/Von_Neumann–Bernays–Gödel_set_theory, while Bernays used different sorts of variables.
$endgroup$
– plm
Dec 29 '18 at 11:55










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