verses? We have so far formulated two candidate criteria: ordinal maxi-mality and power set maximality. The ideal situation would be to combine
them into a singlc consistent critcrion. i.e., a criterion that is satisficd by at
least one element of the hyperuniverse. This is not trivial, since power set
maximality and ordinal maximality contradict cach other. One is thus led
to the following conjecture:
SYNTHESIS CONJECTURE. Let power set maximality* (IMH*) be power set AB) maximality(IMH) restricted to ordinal maximal universes (ie.,the state-ment that if a sentence holds in an ordinal maximal outer model of ∪ then it holds in an inner model of ∪). Then the conjunction of power set maximal-ity* (IMH*) and ordinal maximality is consistent. l.e., there are universes which simultancously satisfy both criteria.
A proof of the Synthesis conjecture is within reach, as it only dcmands the
existing method for proving the consistency of the IMH (see [8])together
with a careful understanding of how Jensen coding can be done in the
presence of small large cardinal properties. Via the Hyperuniverse Program
the Synthesis Conjecture is effective in yielding new (first-order) set-theoretic
axioms, including solutions to independent questions. As universes which
witness the Synthesis Conjecture (i.e., which arc ordinal maximal and satisfy
IMH*) are preferred universes, first-order properties shared by all such
universes are true in I and may be adopted as new axioms. Examples of
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