形式为omega^*->(Y)^1_2的拓扑配分关系
Topological partition relations to the form omega^*-> (Y)^1_2
摘要:
定理:拓扑配分关系omega^{*}->(Y)^{1}_{2}(a)对每个空间Y都不成立,且|Y| >= 2 ^c;(b)对Y离散成立当且仅当|Y| <= c;(c)对某些非离散P-空间Y成立;(d)对Y= omega cup {p}不成立,且p在omega^{*}中;(e)对Y无限且可数紧不成立。
英文摘要:
Theorem: The topological partition relation omega^{*}-> (Y)^{1}_{2} (a) fails for every space Y with |Y| >= 2^c ; (b) holds for Y discrete if and only if |Y| <= c; (c) holds for certain non-discrete P-spaces Y ; (d) fails for Y= omega cup {p} with p in omega^{*} ; (e) fails for Y infinite and countably compact.
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