A class of multipliers from $L^1(\mathbb{R}^n)$ to the Hardy space $H^1(\mathbb{R}^n)$

Abstract

In this note, we show a condition on the derivatives of a multiplier $m\in L^\infty$ that guarantees that $m$ is a multiplier from $L^1(\mathbb{R}^n)$ to the Hardy Space $H^1(\mathbb{R}^n)$.