Internal characterization of Brezis-Lieb spaces

Emelyanov, E. Y.
Marabeh, M. A. A.
In order to find an extension of Brezis-Lieb's lemma to the case of nets, we replace the almost everywhere convergence by the unbounded order convergence and introduce the pre-Brezis-Lieb property in normed lattices. Then we identify a wide class of Banach lattices in which the Brezis-Lieb lemma holds true. Among other things, it gives an extension of the Brezis-Lieb lemma for nets in L-p for p is an element of[1,infinity).


A positive doubly power bounded operator with a nonpositive inverse exists on any infinite-dimensional AL-Space
Alpay, S; Binhadjah, A; Emel'yanov, EY (Springer Science and Business Media LLC, 2006-03-01)
In this paper we construct a positive doubly power bounded operator with a nonpositive inverse on an AL-space.
A note on b-weakly compact operators
Alpay, Safak; Altin, Birol (Springer Science and Business Media LLC, 2007-11-01)
We consider a continuous operator T : E -> X where E is a Banach lattice and X is a Banach space. We characterize the b-weak compactness of T in terms of its mapping properties.
Characterizations of Riesz spaces with b-property
Alpay, Safak; ERCAN, ZAFER (Springer Science and Business Media LLC, 2009-02-01)
A Riesz space E is said to have b-property if each subset which is order bounded in E(similar to similar to) is order bounded in E. The relationship between b-property and completeness, being a retract and the absolute weak topology vertical bar sigma vertical bar (E(similar to), E) is studied. Perfect Riesz spaces are characterized in terms of b-property. It is shown that b-property coincides with the Levi property in Dedekind complete Frechet lattices.
Invariant subspaces for positive operators acting on a Banach space with Markushevich basis
Ercan, Z; Onal, S (Springer Science and Business Media LLC, 2004-06-01)
We introduce 'weak quasinilpotence' for operators. Then, by substituting 'Markushevich basis' and 'weak quasinilpotence at a nonzero vector' for 'Schauder basis' and 'quasinilpotence at a nonzero vector', respectively, we answer a question on the invariant subspaces of positive operators in [ 3].
On ideals generated by positive operators
Alpay, S; Uyar, A (Springer Science and Business Media LLC, 2003-06-01)
Algebra structure of principle ideals of order bounded operators is studied.
Citation Formats
E. Y. Emelyanov and M. A. A. Marabeh, “Internal characterization of Brezis-Lieb spaces,” POSITIVITY, pp. 585–592, 2020, Accessed: 00, 2020. [Online]. Available: