Some new Properties of Sequence Spaces and Application to the Continued Fractions
Some new results on accretive multivalued operators
Some Normed Barrelled Spaces which are not Baire.
Some notes about the convexity module.
Some notes on Markuševič bases in weakly compactly generated Banach spaces
Some notes on various rotundity and smoothness properties of separable Banach spaces
Some observations on local uniform boundedness principles
Some open problems in Banach space theory
Some open problems on best approximation in normed linear spaces
Some permanence results of properties of Banach spaces
Using some known lifting theorems we present three-space property type and permanence results; some of them seem to be new, whereas other are improvements of known facts.
Some problems arising in connection with the theory of vector measures
Some problems on narrow operators on function spaces
It is known that if a rearrangement invariant (r.i.) space E on [0, 1] has an unconditional basis then every linear bounded operator on E is a sum of two narrow operators. On the other hand, for the classical space E = L 1[0, 1] having no unconditional basis the sum of two narrow operators is a narrow operator. We show that a Köthe space on [0, 1] having “lots” of nonnarrow operators that are sum of two narrow operators need not have an unconditional basis. However, we do not know if such an r.i....
Some Properties of a Regular Sequence in Hilbert Space.
Some properties of -convexity.
Some properties of Banach-valued sequence spaces .
Some properties of basic sequences in Banach spaces.
Some properties of ,0 < p < 1
Some properties of spaces.
Some properties of monotone type multivalued operators in Banach spaces
Some properties of monotone type multivalued operators including accretive operators and the duality mapping are studied in connection with the structure of Banach spaces.
Some properties of Pythagorean modulus.