Tianbao Guo

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math.FA2026

On Pełczyński's problem concerning the uniqueness of symmetric structure

Tianbao Guo, Jinghao Huang

Let $E$ and $F$ be separable symmetric Banach sequence spaces, and let $C_{E}$ and $C_{F}$ be the corresponding ideals of compact operators on a separable Hilbert space. We prove that…

math.FA2026

Characterization of surjective isometries: the real case

Tianbao Guo, Jinghao Huang

Let $(Ω, μ)$ and $(Λ, λ)$ be complete atomless localizable semifinite measure spaces. Suppose that $E (Ω, μ)$ and $F (Λ, λ)$ are real rearrangement-invariant Banach function spaces with…