axiom schema of abstraction
名词 n.
英文释义
名词 n.
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The axiom schema stating that for any clearly stated condition Sx, there exists a set B whose elements are exactly those objects which satisfy Sx.
— Whenever a propositional function Sx is definite for all elements of a set M, M possesses a subset whose elements are exactly those x in M for which Sx holds.
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数据来源: Wiktionary