Wavelets from Laguerre polynomials and Toeplitz-type operators

TL;DR

This paper explores Toeplitz-type operators linked to wavelets derived from Laguerre polynomials, revealing their properties, connections to Bergman spaces, and asymptotic behaviors, offering new insights into operator theory and function spaces.

Contribution

It introduces a novel class of Toeplitz-type operators associated with Laguerre polynomial-based wavelets and analyzes their properties and algebraic structures from a new perspective.

Findings

Operators are unitarily equivalent to multiplication operators for certain symbols.

Asymptotic behavior of polyanalytic Bergman spaces is characterized.

Isomorphisms between operator algebras and functional algebras are established.

Abstract

We study Toeplitz-type operators with respect to specific wavelets whose Fourier transforms are related to Laguerre polynomials. On the one hand, this choice of wavelets underlines the fact that these operators acting on wavelet subspaces share many properties with the classical Toeplitz operators acting on the Bergman spaces. On the other hand, it enables to study poly-Bergman spaces and Toeplitz operators acting on them from a different perspective. Restricting to symbols depending only on vertical variable in the upper half-plane of the complex plane these operators are unitarily equivalent to a multiplication operator with a certain function. Since this function is responsible for many interesting features of these Toeplitz-type operators and their algebras, we investigate its behavior in more detail. As a by-product we obtain an interesting observation about the asymptotic behavior of true polyanalytic Bergman spaces. Isomorphisms between the Calder\'on-Toeplitz operator algebras and functional algebras are described and their consequences are discussed.