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Re: at the background of logic
Posted:
Jun 13, 2013 7:52 AM


William Elliot wrote: > On Wed, 12 Jun 2013, Zuhair wrote: > >> I think that all logical connectives, quantifiers and identity are >> derivable from a simple semiformal inference rule denoted by "" to >> represent "infers" and this is not to be confused with the Sheffer >> stroke nor any known logical connective. >> >> A C can be taken to mean the "negation of A" >> >> A,B A can be taken to mean the "conjunction of A and B" > > Requires both that and A,B B. > >> x phi(x) can be taken to mean: for all x. phi(x) > > Confusion of propositions and objects.
How so?
 I think I am an Elephant, Behind another Elephant Behind /another/ Elephant who isn't really there.... A.A. Milne



