ommendation to consider some maximum property of the system of all sets for the purpose of extending ZFC. Since maximality is used in the Hyperuni-versc Program as a motivating principle for criteria for preferred universes we advocated above that this program meets Gödel's recommendation.Of
coursc, while claiming this,we are aware of the fact that the considerations
concerning maximality developed within the Hyperuniverse Program are
of a different nature than those invoked in alternative proposals for new
set-theoretic axioms. This applies, in particular to proposals to the efTect
that ZFC should be cnlarged through the addition of suitable large cardinal
hypotheses,as these being faithful to our expectations concerning the mix/-
mim character of the universe of all sets. Consider the following quotition
by H.Wang ([21].p.553):
We believe that the collection of all ordinals is very ‘long' and cach
power set (of an infinite) set is very ‘thick'. Hence any axioms to
such effect arc in accordance with our intuitive concept.
By giving, as Wang does, the length of the ordinals and the thickness of
powersets as examplesof maximumproperties of the systenofallsets.
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