A Note on the Connectedness of the Invertible Group of a Nest Algebra

A Note on the Connectedness of the Invertible Group of a Nest Algebra

Year:    2014

Author:    Min Zhang, Yue Hua

Communications in Mathematical Research , Vol. 30 (2014), Iss. 4 : pp. 329–333

Abstract

The connectedness of the invertibles question for arbitrary nest has been reduced to the case of the lower triangular operators with respect to a fixed orthonormal basis $e_n$ for $n \geq 1$. For each $f ∈ H^∞$, let $T_f$ be the Toeplitz operator. In this paper we prove that $T_f$ can be connected to the identity through a path in the invertible group of the lower triangular operators if $f$ satisfies certain conditions.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.13447/j.1674-5647.2014.04.06

Communications in Mathematical Research , Vol. 30 (2014), Iss. 4 : pp. 329–333

Published online:    2014-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    5

Keywords:    connectedness nest algebra invertible group.

Author Details

Min Zhang

Yue Hua