کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4659865 1344339 2008 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Noetherian types of homogeneous compacta and dyadic compacta
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات هندسه و توپولوژی
پیش نمایش صفحه اول مقاله
Noetherian types of homogeneous compacta and dyadic compacta
چکیده انگلیسی

The Noetherian type of a space is the least κ such that it has a base that is κ-like with respect to reverse inclusion. Just as all known homogeneous compacta have cellularity at most c, they satisfy similar upper bounds in terms of Noetherian type and related cardinal functions. We prove these and many other results about these cardinal functions. For example, every homogeneous dyadic compactum has Noetherian type ω. Assuming GCH, every point in a homogeneous compactum X has a local base that is c(X)-like with respect to containment. If every point in a compactum has a well-quasiordered local base, then some point has a countable local π-base.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Topology and its Applications - Volume 156, Issue 2, 1 December 2008, Pages 443-464