# Wave packet frames generated by hyponormal operators on $L^2(\mathbb{R})$

## TL;DR

This paper investigates the conditions under which wave packet systems generated by hyponormal operators form frames in L^2(R), providing new characterizations and exploring their linear combinations.

## Contribution

It introduces necessary and sufficient conditions for wave packet frames via hyponormal operators and characterizes hyponormal operators using tight wave packet frames.

## Key findings

- Characterization of hyponormal operators using tight wave packet frames
- Necessary and sufficient conditions for wave packet frames in L^2(R)
- Analysis of linear combinations of wave packet frames

## Abstract

In this paper we study frame-like properties of a wave packet system by using hyponormal operators on $L^2(\mathbb{R})$. We present necessary and sufficient conditions in terms of relative hyponormality of operators for a system to be a wave packet frame in $L^2(\mathbb{R})$. A characterization of hyponormal operators by using tight wave packet frames is proved. This is different from a method proved by Djordjevi$\acute{c}$ by using the Moore-Penrose inverse of a bounded linear operator with a closed range. The linear combinations of wave packet frames generated by hyponormal operators are discussed.