کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4658166 | 1633084 | 2015 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
When is CF(X)=MβX∖I(X)CF(X)=MβX∖I(X)?
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
هندسه و توپولوژی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This short article is in fact an erratum to Theorem 2.5 in Ghirati and Taherifar (2014) [6]. In this paper, we prove that J(C(X)/CF(X))=0J(C(X)/CF(X))=0 or equivalently, the socle CF(X)CF(X) of C(X)C(X) coincides with the intersection of all essential maximal ideals of C(X)C(X) if and only if every infinite subset of I(X)I(X) contains a closed infinite subset, if and only if every pseudocompact subset of X has at most a finite number of isolated points. This fact shows that part (2) of aforementioned Theorem 2.5 is not correct. Our results in this paper also amend Theorem 5.6 in Azarpanah et al. (2008) [2]. Examples are provided to illustrate and delimit our results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Topology and its Applications - Volume 194, October 2015, Pages 22–25
Journal: Topology and its Applications - Volume 194, October 2015, Pages 22–25
نویسندگان
F. Azarpanah, M. Ghirati, A. Taherifar,