The Hurewicz dichotomy for generalized Baire spaces
The Hurewicz dichotomy for generalized Baire spaces
复制标题
广义贝尔空间的 Hurewicz 二分法
DOI:
10.1007/s11856-016-1435-1
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发表时间:
2016
影响因子:
1
通讯作者:
Philipp Schlicht
中科院分区:
文献类型:
--
作者:
Philipp Lücke;Luca Motto Ros;Philipp Schlicht
By classical results of Hurewicz, Kechris and Saint-Raymond, an analytic subset of a Polish spaceXis covered by aKσsubset ofXif and only if it does not contain a closed-in-Xsubset homeomorphic to the Baire spaceww. We consider the analogous statement (which we call theHurewicz dichotomy) for ∑11j subsets of the generalized Baire spaceκκfor a given uncountable cardinalκwithκ=κ<κ. We show that the statement that this dichotomy holds at all uncountable regular cardinals is consistent with the axioms of ZFC together with GCH and large cardinal axioms. In contrast, we show that the dichotomy fails at all uncountable regular cardinals after we add a Cohen real to a model of GCH. We also discuss connections with some regularity properties, like theκ-perfect set property, theκ-Miller measurability, and theκ-Sacks measurability.
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DOI:
10.1017/jsl.2017.44
发表时间:
2017
期刊:
The Journal of Symbolic Logic
影响因子:
--
作者:
Philipp Schlicht
通讯作者:
Philipp Schlicht
影响因子:
1
作者:
Philipp Lücke;Philipp Schlicht
通讯作者:
Philipp Schlicht
影响因子:
0.6
作者:
Thomas A. Johnstone
通讯作者:
Thomas A. Johnstone
影响因子:
0.6
作者:
J. Hamkins
通讯作者:
J. Hamkins
DOI:
--
发表时间:
1992
期刊:
--
影响因子:
--
作者:
M. Goldstern
通讯作者:
M. Goldstern