3 papers
math.FA2026
A twisted Hilbert space not isomorphic to its dual
J. M. F. Castillo, W. H. G. Corrêa
We show: 1) The existence of the first twisted Hilbert space that is not isomorphic to its dual; this solves a problem posed by Cabello in [Nonlinear centralizers in homology, Math…
math.FA2025
Descriptive set theory of separable Fréchet spaces
Bruno de Mendonça Braga, Willian Hans Goes Corrêa, Valentin Ferenczi
In the past few decades, much has been done regarding the descriptive set theory of separable Banach spaces. However, the descriptive properties of separable Fréchet spaces have n…
math.FA2024
Extremes of interpolation scales of Banach spaces
Willian Corrêa, Valentin Ferenczi, Rafela Gesing +1
M. Daher gave conditions so that the spheres of the spaces in the interior of a complex interpolation scale are uniformly homeomorphic. We look for sufficient conditions for the va…