English

Paths of inner-related functions

Classical Analysis and ODEs 2010-12-22 v1

Abstract

We characterize the connected components of the subset \cni\cni of HH^\infty formed by the products bhbh, where bb is Carleson-Newman Blaschke product and hHh\in H^\infty 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 \cni\cni within the set of products uhuh, where uu is inner and hh is invertible. We also study some of these issues in the context of Douglas algebras.

Cite

@article{arxiv.1012.4644,
  title  = {Paths of inner-related functions},
  author = {Artur Nicolau and Daniel Suárez},
  journal= {arXiv preprint arXiv:1012.4644},
  year   = {2010}
}
R2 v1 2026-06-21T17:02:24.826Z