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Quasi reflexivity and the sup of linear functionals

Published online by Cambridge University Press:  17 April 2009

P.K. Jain
Affiliation:
Department of Mathematics, University of Delhi, Delhi 110007, India
K.K. Arora
Affiliation:
Department of Mathematics, Rajdhani College, University of Delhi, Ring Road, Raja Garden, New Delhi 110015, India
D.P. Sinha
Affiliation:
Department of Mathematics, Dyal Singh College, University of Delhi, Lodi Road, New Delhi 110003, India
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Abstract

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Quasi reflexive Banach spaces are characterised among the weakly countably determined Asplund spaces, in terms of the cardinality of the sets of linearly independent bounded linear functionals each of which does not attain its supremum on the unit sphere.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1997

References

[1]Amir, D. and Lindenstrauss, J., ‘The structure of weakly compact sets in Banach spaces’, Ann. of Math. 88 (1968), 3546.CrossRefGoogle Scholar
[2]Civin, P. and Yood, B., ‘Quasi-reflexive spaces’, Proc. Amer. Math. Soc. 8 (1957), 906911.CrossRefGoogle Scholar
[3]Deville, R., Godefroy, G. and Zizler, V., Smoothness and renormings in Banach spaces (Longman Scientific and Technical, Harlow, 1993).Google Scholar
[4]Fabian, M., ‘Each weakly countably determined Asplund space admits a Frechét differentiable norm’, Bull. Austral. Math. Soc. 36 (1987), 367374.CrossRefGoogle Scholar
[5]Jain, P.K., Arora, K.K. and Sinha, D.P., ‘Weak* sequential compactness of dual unit balls of Banach spaces with PRI’, J. Indian. Math. Soc. (to appear).Google Scholar
[6]James, R.C., ‘Reflexivity and the supremum of linear functional’, Ann. Math. 66 (1957), 159169.CrossRefGoogle Scholar
[7]James, R.C., ‘Characterizations of reflexivity’, Studia Math. 23 (1964), 205216.CrossRefGoogle Scholar
[8]James, R.C., ‘Weakly compact sets’, Trans. Amer. Math. Soc. 113 (1964), 129140.CrossRefGoogle Scholar
[9]James, R.C., ‘Reflexivity and the sup of linear functionals’, Israel J. Math. 13 (1972), 289300.CrossRefGoogle Scholar
[10]John, K. and Zizler, V., ‘Duals of Banach spaces which admit non trivial smooth functions’, Bull. Austral. Math. Soc. 11 (1974), 161166.CrossRefGoogle Scholar
[11]John, K. and Zizler, V., ‘Weak compact generating in duality’, Studia Math. 55 (1976), 120.CrossRefGoogle Scholar
[12]Klee, V., ‘Some characterizations of reflexivity’, Rev. Cienc. (Lima) 52 (1950), 1523.Google Scholar
[13]Neidinger, R. and Rosenthal, H.P., ‘Norm - attainment of linear functionals on subspaces and characterization of Tauberian operators’, Pacific J. Math. 118 (1985), 215228.CrossRefGoogle Scholar
[14]Orihuela, J. and Valdivia, M., ‘Projective generators and resolutions of identity in Banach spaces’, Rev. Mate. Univ. Comp. Madrid 2 (1989), 179199.Google Scholar
[15]Ruston, A.F., ‘Conjugate Banach spaces’, Proc. Camb. Phil. Soc. 53 (1957), 576580.CrossRefGoogle Scholar
[16]Singer, I., Bases in Banach spaces II (Springer-Verlag, Berlin, Heidelberg, New York, 1981).CrossRefGoogle Scholar
[17]Vašák, L., ‘On one generalization of weakly compactly generated Banach spaces’, Studia Math. 70 (1981), 1119.CrossRefGoogle Scholar