کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4590509 1334966 2012 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Paths of inner-related functions
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات اعداد جبر و تئوری
پیش نمایش صفحه اول مقاله
Paths of inner-related functions
چکیده انگلیسی

We characterize the connected components of the subset CN⁎ of H∞ formed by the products bh, where b is Carleson–Newman Blaschke product and h∈H∞ is an invertible function. We use this result to show that, except for finite Blaschke products, no inner function in the little Bloch space is in the closure of one of these components. Our main result says that every inner function can be connected with an element of CN⁎ within the set of products uh, where u is inner and h is invertible. We also study some of these issues in the context of Douglas algebras.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Functional Analysis - Volume 262, Issue 9, 1 May 2012, Pages 3749-3774