On the Cardinality of $$ \sum_2^1 $$ Sets of Reals
作者： Robert M. Solovay
DOI: 10.1007/978-3-642-86745-3_7
关键词: Measurable cardinal 、 Supercompact cardinal 、 Order isomorphism 、 Discrete mathematics 、 Cardinality 、 Continuum hypothesis 、 Mathematics
摘要: What are the possible cardinalities of subsets reals? R itself has power 2א0; it is trivial to exhibit integers any ≦א0. The Continuum Hypothesis Cantor conjectures that these examples exhaust .
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