TRANSITIVITY, LOWNESS, AND RANKS IN NSOP THEORIES
TRANSITIVITY, LOWNESS, AND RANKS IN NSOP THEORIES
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NSOP 理论中的传递性、低度和等级
DOI:
10.1017/jsl.2023.36
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发表时间:
2023
期刊:
影响因子:
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通讯作者:
RAMSEY, NICHOLAS
中科院分区:
文献类型:
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作者:
CHERNIKOV, ARTEM;KIM, BYUNGHAN;RAMSEY, NICHOLAS
We develop the theory of Kim-independence in the context of NSOPtheories satisfying the existence axiom. We show that, in such theories, Kim-independence is transitive and that-Morley sequences witness Kim-dividing. As applications, we show that, under the assumption of existence, in a low NSOPtheory, Shelah strong types and Lascar strong types coincide and, additionally, we introduce a notion of rank for NSOPtheories.