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ǁ G+ωTǁ = 1 + ǁTǁ.
This concept extends the properties of the identity operator in those Banach spaces having numerical index one. Many examples among classical spaces are provided, being one of them the Fourier transform on L₁. The relationships with the Radon-Nikodým property, with Asplund spaces and with the duality, and some isometric and isomorphic consequences are provided. Finally, Lipschitz operators satisfying the Lipschitz version of the equation above are studied.Nous publions uniquement les avis qui respectent les conditions requises. Consultez nos conditions pour les avis.