Geodesic
Closed spans in vector-valued function spaces and their approximative properties
Izvestiya. Mathematics , Tome 68 (2004) no. 4, pp. 709-747.

Voir la notice de l'article provenant de la source Math-Net.Ru

We study the structural and approximative properties of closed spans in vector-valued function spaces. We consider the problems of existence and uniqueness of a best approximation of the space by closed spans and the stability of the metric projector. 
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A. A. Vasil'eva. Closed spans in vector-valued function spaces and their approximative properties. Izvestiya. Mathematics , Tome 68 (2004) no. 4, pp. 709-747. http://geodesic.mathdoc.fr/item/IM2_2004_68_4_a2/

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