Toeplitz operators and Wiener-Hopf factorisation: an introduction

2017/10/31 by Câmara, M. Cristina · 1 citation
#FOS: Mathematics #Functional Analysis (math.FA)

paper · doi:10.48550/arxiv.1710.11572

Abstract

Wiener-Hopf factorisation plays an important role in the theory of Toeplitz operators. We consider here Toeplitz operators in the Hardy spaces H^p of the upper half-plane and we review how their Fredholm properties can be studied in terms of a Wiener-Hopf factorisation of their symbols, obtaining necessary and sufficient conditions for the operator to be Fredholm or invertible, as well as formulae for their inverses or one-sided inverses when these exist. The results are applied to a class of singular integral equations in L^p(\mathbb R).

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• Maximal functions, conjugations and multipliers between Toeplitz kernels

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