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Bibliographic Details
Main Authors: Liu, Hua, Zhang, Xinyang
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2503.08590
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Table of Contents:
  • In this paper we study the essential spectra of the Toeplitz operator on the Hardy space $H^1$. We give a counterexample to show that the Toeplitz operator with symbol is not Fredholm, which gives a counterexample to the conjecture by J.A. Virtanen J A in 2006.