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Listar por autor "Khalil, Roshdi"
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Best approximation in vector valued function spaces
Let T be the unit circle, and m be the normalized Lebesgue measure on T. If H is a separable Hilbert space, we let L∞T,H) be the space of essentially bounded functions on T with values in H. Continuous functions with values ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Matemáticas. -
M-ideals in banach spaces
Let X and Y be given Banach spaces, and L(X,Y) be the space of bounded linear operators from X into Y. Compact operators are denoted by K(X,Y). It is shown that under certain conditions if k(X,Y) is an M-ideal of L(X,Y), ...Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Matemáticas.
