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Listar por palabra clave "Geometry of Banach spaces"

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Listar por palabra clave "Geometry of Banach spaces"

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    Octahedrality and Gâteaux smoothness 
    Cobollo-Gómez, Christian; Hájek, P. (Elsevier, 2025-03-15)
    [EN] We prove that every Banach space admitting a Gâteaux smooth norm and containing a complemented copy of I1 has an equivalent renorming which is simultaneously Gâteaux smooth and octahedral. This is a partial solution ...
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    The numerical index of 2-dimensional Lipschitz-free spaces 
    Cobollo-Gómez, Christian; Guirao Sánchez, Antonio José; Montesinos Santalucia, Vicente (Elsevier, 2024-10-01)
    [EN] We provide the explicit formula for the numerical index of any 2 -dimensional Lipschitz-free space, also giving the construction of operators attaining this value as its numerical radius. As a consequence, the numerical ...