Square and Delta reflection
نویسندگان
چکیده
Starting from infinitely many supercompact cardinals, we force a model of ZFC where אω2+1 satisfies simultaneously a strong principle of reflection, called ∆-reflection, and a version of the square principle, denoted (אω2+1). Thus we show that אω2+1 can satisfy simultaneously a strong reflection principle and an anti-reflection principle.
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ورودعنوان ژورنال:
- Ann. Pure Appl. Logic
دوره 167 شماره
صفحات -
تاریخ انتشار 2016