Full Souslin trees at small cardinals

被引:0
|
作者
Rinot, Assaf [1 ]
Yadai, Shira [1 ]
You, Zhixing [1 ]
机构
[1] Bar Ilan Univ, Dept Math, IL-52900 Ramat Gan, Israel
基金
欧洲研究理事会; 以色列科学基金会;
关键词
SUSLIN TREES;
D O I
10.1112/jlms.12957
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
A kappa$\kappa$-tree is full if each of its limit levels omits no more than one potential branch. Kunen asked whether a full kappa$\kappa$-Souslin tree may consistently exist. Shelah gave an affirmative answer of height a strong limit Mahlo cardinal kappa$\kappa $. Here, it is shown that these trees may consistently exist at small cardinals. Indeed, there can be aleph 3$\aleph _3$ many full aleph 2$\aleph _2$-trees such that the product of any countably many of them is an aleph 2$\aleph _2$-Souslin tree.
引用
收藏
页数:26
相关论文
共 50 条