{ "id": "1806.10757", "version": "v1", "published": "2018-06-28T03:36:53.000Z", "updated": "2018-06-28T03:36:53.000Z", "title": "Reducing subspaces for multiplication operators on the Dirichlet space through local inverses and Riemann surface", "authors": [ "Caixing Gu", "Shuaibing Luo", "Jie Xiao" ], "categories": [ "math.FA", "math.CV", "math.OA" ], "abstract": "This paper is devoted to the study of reducing subspaces for multiplication operator $M_\\phi$ on the Dirichlet space with symbol of finite Blaschke product. The reducing subspaces of $M_\\phi$ on the Dirichlet space and Bergman space are related. Our strategy is to use local inverses and Riemann surface to study the reducing subspaces of $M_\\phi$ on the Bergman space, and we discover a new way to study the Riemann surface for $\\phi^{-1}\\circ\\phi$. By this means, we determine the reducing subspaces of $M_\\phi$ on the Dirichlet space when the order of $\\phi$ is $5$; $6$; $7$ and answer some questions of Douglas-Putinar-Wang \\cite{DPW12}.", "revisions": [ { "version": "v1", "updated": "2018-06-28T03:36:53.000Z" } ], "analyses": { "keywords": [ "reducing subspaces", "dirichlet space", "riemann surface", "multiplication operator", "local inverses" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }