کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4598528 1631090 2016 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Weighted shift and composition operators on ℓp which are (m,q)-isometries
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات اعداد جبر و تئوری
پیش نمایش صفحه اول مقاله
Weighted shift and composition operators on ℓp which are (m,q)-isometries
چکیده انگلیسی

We obtain some conditions about the weighted shift and the composition operators on ℓpℓp to be (m,q)(m,q)-isometries. In particular, we prove that if T   is a strict (2,q)(2,q) isometry, then p=qp=q, whether T   is a weighted shift or a composition operator on ℓpℓp. Moreover, we characterize the admissible weights for the weighted shift to be a strict (3,p)(3,p)-isometry on ℓpℓp. The case of strict (4,p)(4,p)-isometry is also studied.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Linear Algebra and its Applications - Volume 505, 15 September 2016, Pages 152–173
نویسندگان
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