Re: HF set theory – Re: [Metamath] Predicate Calculus Functions

2021-08-15 Thread Norman Megill
In the mmset.html ref. [KalishMontague], p. 81 footnote says: "The fact that (B7') [our ax-6] can be replaced by the weaker axiom (B7) [our ax-6v] is stated implicitly in the abstract [5], where also the rather obvious possibility is mentioned of extending the approach to predicate logic with

Re: HF set theory – Re: [Metamath] Predicate Calculus Functions

2021-08-15 Thread Scott Fenton
Sorry, ax-6 > On Aug 15, 2021, at 12:10 PM, Scott Fenton wrote: > >  > That and the paper it references are actually what I was working from! HF > theory employs terms, so I was wondering, for instance, if ax-5 would need to > be rephrased to work with terms. > >>> On Aug 15, 2021, at

Re: HF set theory – Re: [Metamath] Predicate Calculus Functions

2021-08-15 Thread Scott Fenton
That and the paper it references are actually what I was working from! HF theory employs terms, so I was wondering, for instance, if ax-5 would need to be rephrased to work with terms. > On Aug 15, 2021, at 12:02 PM, Ken Kubota wrote: > >  > I’m not sure whether this helps, but Larry

HF set theory – Re: [Metamath] Predicate Calculus Functions

2021-08-15 Thread Ken Kubota
I’m not sure whether this helps, but Larry Paulson's presentation employs HF set theory: https://www.cl.cam.ac.uk/~lp15/papers/Formath/Goedel-logic-mine.pdfKind regards,Ken KubotaKen Kubotahttps://doi.org/10./100 Am 15.08.2021 um 01:11