A variant of Shelah's characterization of Strong Chang's Conjecture
A variant of Shelah's characterization of Strong Chang's Conjecture
复制标题
Shelah 对 Strong Chang 猜想的描述的一种变体
DOI:
10.1002/malq.201800082
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发表时间:
2019
影响因子:
0.3
通讯作者:
Sakai Hiroshi
中科院分区:
文献类型:
--
作者:
Cox Sean;Sakai Hiroshi
Shelah considered a certain version of Strong Chang's Conjecture which we denote , and proved that it is equivalent to several statements, including the assertion that Namba forcing is semiproper. We introduce an apparently weaker version, denoted , and prove an analogous characterization of it. In particular, is equivalent to the assertion that the the Friedman‐Krueger poset is semiproper. This strengthens and sharpens results by Cox and sheds some light on problems posed by Usuba, Torres‐Perez and Wu.
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影响因子:
0.3
作者:
Hiroshi Sakai
通讯作者:
Hiroshi Sakai
DOI:
10.1007/s00605-018-1182-y
发表时间:
2016
期刊:
Monatshefte für Mathematik
影响因子:
--
作者:
Sean D. Cox
通讯作者:
Sean D. Cox
DOI:
10.4153/cjm-2017-006-x
发表时间:
2016
期刊:
Canadian Journal of Mathematics
影响因子:
--
作者:
A. Dow;F. Tall
通讯作者:
F. Tall
DOI:
10.1142/s021906130300025x
发表时间:
2000
期刊:
J. Math. Log.
影响因子:
--
作者:
P. Larson;S. Shelah
通讯作者:
S. Shelah
影响因子:
1.3
作者:
S. Friedman;J. Krueger
通讯作者:
J. Krueger