کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5778905 1413743 2017 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Some properties of the Wolf and Weyl essential spectra of a sequence of linear operators ν-convergent
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات ریاضیات (عمومی)
پیش نمایش صفحه اول مقاله
Some properties of the Wolf and Weyl essential spectra of a sequence of linear operators ν-convergent
چکیده انگلیسی
This work is devoted to the investigation of some properties of the essential spectra of a sequence of bounded linear operators by referring back to ν-convergence in a Banach space. In addition to that, we shed light on the notion of ν-continuity. In fact, if U is a bounded linear operator then the Wolf essential spectrum and the Weyl essential spectrum of U are ν-upper semi-continuous at U (Theorem 3.3). Similarly we study the ν-continuity of some 2×2 block operator matrices (Theorem 3.4).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Indagationes Mathematicae - Volume 28, Issue 2, April 2017, Pages 424-435
نویسندگان
,