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Search: MSC category 46B40 ( Ordered normed spaces [See also 46A40, 46B42] )

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1. CMB 2011 (vol 54 pp. 577)

Aqzzouz, Belmesnaoui
Erratum: The Duality Problem For The Class of AM-Compact Operators On Banach Lattices
It is proved that if a positive operator $S: E \rightarrow F$ is AM-compact whenever its adjoint $S': F' \rightarrow E'$ is AM-compact, then either the norm of F is order continuous or $E'$ is discrete. This note corrects an error in the proof of Theorem 2.3 of B. Aqzzouz, R. Nouira, and L. Zraoula, The duality problem for the class of AM-compact operators on Banach lattices. Canad. Math. Bull. 51(2008).

Categories:46A40, 46B40, 46B42

2. CMB 2008 (vol 51 pp. 15)

Aqzzouz, Belmesnaoui; Nouira, Redouane; Zraoula, Larbi
The Duality Problem for the Class of AM-Compact Operators on Banach Lattices
We prove the converse of a theorem of Zaanen about the duality problem of positive AM-compact operators.

Keywords:AM-compact operator, order continuous norm, discrete vector lattice
Categories:46A40, 46B40, 46B42

3. CMB 2007 (vol 50 pp. 619)

Tcaciuc, Adi
On the Existence of Asymptotic-$l_p$ Structures in Banach Spaces
It is shown that if a Banach space is saturated with infinite dimensional subspaces in which all ``special" $n$-tuples of vectors are equivalent with constants independent of $n$-tuples and of $n$, then the space contains asymptotic-$l_p$ subspaces for some $1 \leq p \leq \infty$. This extends a result by Figiel, Frankiewicz, Komorowski and Ryll-Nardzewski.

Categories:46B20, 46B40, 46B03

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