Abstract
We define a weak iterability notion that is sufficient for a number of arguments concerning Σ_1-definability at uncountable regular cardinals. In particular we give its exact consistency strength firstly in terms of the second uniform indiscernible for bounded subsets of kappa : u_2(kappa ), and secondly to give the consistency strength of a property of Lücke’s.
Original language | English |
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Journal | Journal of Symbolic Logic |
DOIs | |
Publication status | Accepted/In press - 27 Nov 2019 |
Keywords
- inner model
- large cardinals
- reflection principle