Lipschitz spaces associated with a sum of two flag singular integrals
摘要
The aim of this paper is to develop a theory of Lipschitz spaces associated with the sum of two flag singular integrals. We characterize these Lipschitz spaces using Littlewood-Paley theory and demonstrate that the sum of these two flag singular integrals is bounded on them. Additionally, we provide a characterization of these spaces as the sum of flag Lipschitz spaces.