کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4660717 1344381 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
HFD groups in the Solovay model
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات هندسه و توپولوژی
پیش نمایش صفحه اول مقاله
HFD groups in the Solovay model
چکیده انگلیسی

Hajnal and Juhász proved that under CH there is a hereditarily separable, hereditarily normal topological group without non-trivial convergent sequences that is countably compact and not Lindelöf. The example constructed is a topological subgroup H⊆ω12 that is an HFD with the following property(P)the projection of H onto every partial product I2 for I∈ω[ω1] is onto. Any such group has the necessary properties. We prove that if κ is a cardinal of uncountable cofinality, then in the model obtained by forcing over a model of CH with the measure algebra on κ2, there is an HFD topological group in ω12 which has property (P).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Topology and its Applications - Volume 156, Issue 10, 1 June 2009, Pages 1807-1810