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math.LO2021
Cofinal types on
Borisa Kuzeljevic, Stevo Todorcevic
In this paper we start the analysis of the class , the class of cofinal types of directed sets of cofinality at most . We compare elements of $\mat…
math.LO2021★ 3 cited
Ultrafilter selection and Corson compacta
Robert Bonnet, Wieslaw Kubiś, Stevo Todorčević
We study the question which Boolean algebras have the property that for every generating set there is an ultrafilter selecting maximal number of its elements. We call it the ultraf…