کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4659490 1344326 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Weak P-points in coronas of G-spaces
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات هندسه و توپولوژی
پیش نمایش صفحه اول مقاله
Weak P-points in coronas of G-spaces
چکیده انگلیسی

Let G be a group, X be a discrete G-space, X⁎ be the remainder of the Stone–Čech compactification of X. The corona of X is a factor-space of X⁎ by the smallest by inclusion, closed in X⁎×X⁎ equivalence on X⁎ containing the orbit equivalence ∼ (p∼q⇔∃g∈G:q=gp). For a countable group G and a countable G-space X we prove that the corona of X contains a weak P-point and a P-point provided that there exists a P-point in ω⁎. Then we transfer this statement to the Higson coronas of a proper metric spaces of bounded geometry.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Topology and its Applications - Volume 159, Issue 3, 15 February 2012, Pages 587-592