๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Centralizers of finite Blaschke products

โœ Scribed by Carlos Arteaga

Publisher
Springer
Year
2000
Tongue
English
Weight
448 KB
Volume
31
Category
Article
ISSN
1678-7714

No coin nor oath required. For personal study only.

๐Ÿ“œ SIMILAR VOLUMES

Finite Blaschke products of contractions
Finite Blaschke products of contractions
โœ Hwa-Long Gau; Pei Yuan Wu ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 128 KB

Let A be a contraction on Hilbert space H and ฯ† a finite Blaschke product. In this paper, we consider the problem when the norm of ฯ†(A) is equal to 1. We show that (1) ฯ†(A) = 1 if and only if A k = 1, where k is the number of zeros of ฯ† counting multiplicity, and (2) if H is finite-dimensional and A

Products of orders of centralizers
Products of orders of centralizers
โœ E. C. Dade ๐Ÿ“‚ Article ๐Ÿ“… 1967 ๐Ÿ› Springer-Verlag ๐ŸŒ French โš– 114 KB
Absolutely Continuous Conjugacies of Bla
Absolutely Continuous Conjugacies of Blaschke Products
โœ D.H. Hamilton ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 539 KB

## Introduction Let S be the unit circle. We call a (measureable) bijection . : S ร„ S absolutely continuous if for any A/S, \*(A)=0 if and only if \*(.(A))=0, where \* denotes normalised Lebesgue (arc) measure on S. We consider (finite) nontrivial (i.e. not 1:1 or constant) Blaschke products whic