DEFINABLE -THEOREM FOR FAMILIES WITH VC-CODENSITY LESS THAN
DEFINABLE -THEOREM FOR FAMILIES WITH VC-CODENSITY LESS THAN
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VC 密度小于的族的可定义定理
DOI:
10.1017/jsl.2023.46
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
ANDÚJAR GUERRERO P
中科院分区:
文献类型:
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作者:
ANDÚJAR GUERRERO P
Letbe a family of nonempty sets with VC-codensity less than. We prove that, ifhas the-property (for any infinitely many sets in, at least two among them intersect), thencan be partitioned into finitely many subfamilies, each with the finite intersection property. Ifis definable in some first-order structure, then these subfamilies can be chosen definable too.