Abstract
It is known that there is a continuous linear functional on L ∞ which is not narrow. On the other hand, every order-to-norm continuous AM-compact operator from L ∞(μ) to a Banach space is narrow. We study order-to-norm continuous operators acting from L ∞(μ) with a finite atomless measure μ to a Banach space. One of our main results asserts that every order-to-norm continuous operator from L ∞(μ) to c 0(Γ) is narrow while not every such an operator is AM-compact.
Similar content being viewed by others
References
Albiac F., Kalton N., Topics in Banach Space Theory, Graduate Texts in Mathematics 233, Springer, New York, 2006
Aliprantis CD., Burkinshaw O., Positive Operators, Springer, Dordrecht, 2006
Benyamini Y., Lin P.-K., An operator on L p without best compact approximation, Israel J. Math., 1985, 51, 298–304
Flores J., Ruiz C, Domination by positive narrow operators, Positivity, 2003, 7, 303–321
Jech Th., Set Theory, Springer, Berlin, 2003
Kadets V, Martín M., Merí J., Shepelska V, Lushness, numerical index one and duality, J. Math. Anal. Appl., 2009, 357, 15–24
Kadets V.M., Popov M.M., On the Liapunov convexity theorem with applications to sign-embeddings, Ukr. Mat. Zh., 1992, 44(9), 1192–1200
Kadets V.M., Popov M.M., The Daugavet property for narrow operators in rich subspaces of the spaces C[0,1] and L 1[0,1], Algebra i Analiz, 1996, 8, 43–62 (in Russian), English translation: St. Petersburg Math. J., 1997, 8, 571–584
Krasikova I.V., A note on narrow operators in L ∞, Math. Stud., 2009, 31(1), 102–106
Lindenstrauss J., Pełczyński A., Absolutely summing operators in ℒp-spaces and their applications, Studia Math, 1968, 29, 275–326
Lindenstrauss J., Tzafriri L., Classical Banach Spaces, Vol. 1, Sequence spaces, Springer-Verlag, Berlin-Heidelberg-New York, 1977
Lindenstrauss J., Tzafriri L., Classical Banach Spaces, Vol. 2, Function spaces, Springer-Verlag, Berlin-Heidelberg-New York, 1979
Maslyuchenko O.V, Mykhaylyuk V.V., Popov M.M., A lattice approach to narrow operators, Positivity, 2009, 13, 459–495
Plichko A.M., Popov M.M., Symmetric function spaces on atomless probability spaces, Dissertationes Math., 1990, 306, 1–85
Author information
Authors and Affiliations
Corresponding author
About this article
Cite this article
Krasikova, I., Martín, M., Merí, J. et al. On order structure and operators in L ∞(μ). centr.eur.j.math. 7, 683–693 (2009). https://doi.org/10.2478/s11533-009-0047-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.2478/s11533-009-0047-y