کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4591507 1335033 2011 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Unitary equivalence of one-parameter groups of Toeplitz and composition operators
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات اعداد جبر و تئوری
پیش نمایش صفحه اول مقاله
Unitary equivalence of one-parameter groups of Toeplitz and composition operators
چکیده انگلیسی

The composition operators on H2 whose symbols are hyperbolic automorphisms of the unit disk fixing ±1 comprise a one-parameter group and the analytic Toeplitz operators coming from covering maps of annuli centered at the origin whose radii are reciprocals also form a one-parameter group. Using the eigenvectors of the composition operators and of the adjoints of the Toeplitz operators, a direct unitary equivalence is found between the restrictions to zH2 of the group of Toeplitz operators and the group of adjoints of these composition operators. On the other hand, it is shown that there is not a unitary equivalence of the groups of Toeplitz operators and the adjoints of the composition operators on the whole of H2, but there is a similarity between them.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Functional Analysis - Volume 261, Issue 9, 1 November 2011, Pages 2641-2655