A counterexample to the approximation problem in Banach spaces
Tài liệu tham khảo
Grothendieck, A., Produits tensoriels topologiques et espaces nucleaires.Mem. Amer. Math. Soc., 16 (1955).
Enflo, P., A Banach space with basis constant >1.Arkiv för matematik, 11 (1973), 103–107.
Johnson, W. B., Rosenthal, H. P., &Zippin, M., On bases, finite-dimensional decompositions and weaker structures in Banach spaces.Israel J. Math. 9 (1971), 488–506.
Johnson, W. B., A complementably universal conjugate Banach space and its relation to the approximation problem.Israel J. Math. 13 (1972), 301–310.