کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4658988 1344298 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A non-2-starcompact, pseudocompact Tychonoff space whose hyperspace is 2-starcompact
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات هندسه و توپولوژی
پیش نمایش صفحه اول مقاله
A non-2-starcompact, pseudocompact Tychonoff space whose hyperspace is 2-starcompact
چکیده انگلیسی

For a topological space X, let H(X) be the collection of all nonempty closed subsets of X with the Vietoris topology and let C(X) be the collection of all nonempty compact subsets of X equipped with the subspace topology.We prove the following:(1)if C(X) is 1-starcompact, then X is K-starcompact;(2)if C(X) is -starcompact, then X is -starcompact; and(3)if X is a regular space which has a closed discrete subset E such that |E|=w(X)⩾ω, then C(X) is not -starcompact, where w(X) is the weight of X.And we show that there exists a non-2-starcompact, pseudocompact Tychonoff space X whose hyperspace H(X) is 2-starcompact under the assumption p=c.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Topology and its Applications - Volume 160, Issue 1, 1 January 2013, Pages 126-132