The covering-with-Chang-models conjecture
The covering-with-Chang-models conjecture
Assume and suppose there are unboundedly many Woodin cardinals and strong cardinals. Let denote the assertion that there is no active -iterable countable mouse or lbr mouse whose last extender is a long extender. Let denote ZFC without the powerset axiom. Let denote the strengthened axiom of determinacy, and let be the Levy collapse. If is a limit of Woodin cardinals and strong cardinals such that either is measurable or , then there is a transitive model of satisfying: (1) ; (2) has a largest cardinal ; (3) for every generic , defining and , one has
and (4), if there is no inner model with a subcompact cardinal, then
Covering with Chang Models conjecture. The asserted transitive model exists with all the listed properties. This conjecture is intended to overcome limitations of the core model induction and would yield consequences for the Proper Forcing Axiom, including an inner model with a subcompact cardinal. Its resolution status is not given in the supplied text.
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Sources & referencesView supporting material
Primary source
Grigor Sargsyan, “Generic Generators”, arXiv:2307.00109 (2025).
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