Que sont les facteurs directs des espaces de Banach classiques ?
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Marc Rogalski (1977)
Séminaire Choquet. Initiation à l'analyse
Hicham Fakhoury (1979)
Studia Mathematica
S. Guerre, J. T. Lapresté (1980)
Annales de l'I.H.P. Probabilités et statistiques
Gilles Godefroy (1977)
Séminaire Choquet. Initiation à l'analyse
Vladimir Kadets, Varvara Shepelska, Dirk Werner (2008)
Bulletin of the Polish Academy of Sciences. Mathematics
We consider a general concept of Daugavet property with respect to a norming subspace. This concept covers both the usual Daugavet property and its weak* analogue. We introduce and study analogues of narrow operators and rich subspaces in this general setting and apply the results to show that a quotient of L₁[0,1] by an ℓ₁-subspace need not have the Daugavet property. The latter answers in the negative a question posed to us by A. Pełczyński.
N. Kalton, N. Peck (1979)
Studia Mathematica
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