Rudin-Keisler Posets of Complete Boolean Algebras
نویسندگان
چکیده
The Rudin-Keisler ordering of ultrafilters is extended to complete Boolean algebras and characterised in terms of elementary embeddings of Boolean ultrapowers. The result is applied to show that the Rudin-Keisler poset of some atomless complete Boolean algebras is nontrivial.
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ورودعنوان ژورنال:
- Math. Log. Q.
دوره 47 شماره
صفحات -
تاریخ انتشار 2001