A weak version of ◊ which follows from 2ℵ0<2ℵ1
A weak version of ◊ which follows from 2ℵ0<2ℵ1
复制标题
◊ 的弱版本,源自 2ℵ0<2ℵ1
DOI:
--
复制
发表时间:
1978
期刊:
影响因子:
--
通讯作者:
S. Shelah
中科院分区:
文献类型:
--
作者:
K. Devlin;S. Shelah
We prove that if CH holds (or even if 2ℵ0 < 2ℵ1), then a weak version of ◊ holds. This weak version of ◊ is a ◊-like principle, and is strong enough to yield some of the known consequences of ◊.