Cohyponormality of Unbounded Product of Composition Operators in L2 Spaces

Let X,A,μ be a σ-finite measure space. The composition operators Cϕ:DCϕ⟶L2μ are defined by Cϕf=f∘ϕ,f∈DCϕ, where ϕ are nonsingular transformations and DCϕ=f∈L2μ: f∘ϕ∈L2μ. Suppose that ϕ1,ϕ2,⋯,ϕn are nonsingular transformations of X, where n∈ℕ and n≥2. It is natural to define the product operator of c...

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Bibliographic Details
Main Authors: Hang Zhou, Qing Su
Format: Article
Language:English
Published: Wiley 2025-01-01
Series:Journal of Function Spaces
Online Access:http://dx.doi.org/10.1155/jofs/7403237
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