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- Path: sparky!uunet!caen!spool.mu.edu!agate!solovay
- From: solovay@math.berkeley.edu (Robert M. Solovay)
- Newsgroups: sci.logic
- Subject: Re: Impredicativity - was: Russell's Paradox.
- Date: 5 Nov 1992 09:06:36 GMT
- Organization: U.C. Berkeley Math. Department.
- Lines: 23
- Message-ID: <1dao6sINN6fs@agate.berkeley.edu>
- References: <1992Nov4.015603.16555@CSD-NewsHost.Stanford.EDU> <1992Nov4.161936.12444@guinness.idbsu.edu> <1992Nov4.221041.4812@CSD-NewsHost.Stanford.EDU>
- NNTP-Posting-Host: math.berkeley.edu
-
- In article <1992Nov4.221041.4812@CSD-NewsHost.Stanford.EDU> pratt@Sunburn.Stanford.EDU (Vaughan R. Pratt) writes:
-
- >It should be pointed out that neither of the two axiomatizations of ZF
- >(that I took as definitive of ZF for my bet that ZF will be shown
- >inconsistent by 2012) mention FA. These were the axiomatizations of
- >Takeuti and Zaring in their book "Introduction to Axiomatic Set
- >Theory", and of Schoenfield in his article in Barwise's "Handbook of
- >Mathematical Logic." I selected these only because of their
- >accessibility, not because they omitted FA. In fact I do not know of
- >an equally accessible axiomatization of ZF that includes FA (we
- >amateurs are appallingly ignorant). Randall, you're the one appealing
- >to FA here, can you suggest a suitably accessible axiomatization that
- >includes it? It would come in handy for future reference.
- >
-
- >Vaughan Pratt There's no truth in logic, son.
-
- Foundation is definitely considered one of the standard axioms
- of ZF. Try Kunen, Set Theory:An introduction to Independence Proofs,
- for example.
-
- Bob Solovay
- solovay@math.berkeley.edu
-