Abstract:
We establish a factorization theorem for the Hardy space $H^p(\mathbb{R}^n)$$\bigl(\frac{n}{n+1}<p <1\bigr)$ in terms of a multilinear fractional integral operator. As an application, a characterization of Lipschitz spaces via the boundedness of commutators of the multilinear fractional integral operator is obtained.
Keywords:Hardy space, Lipschitz space, boundedness, factorization, fractional integral operator.
Key Scientific Project of Higher Education Institutions in Anhui Province
2023AH050145
This work was supported by NSF of China (No. 12101010), NSF of China of Anhui
Province (No. 2108085QA19), and Key Scientific Project of Higher Education
Institutions in Anhui Province (No. 2023AH050145).