Nonlinear operator equations and boundary-value problems
Nonlinear Variational Inequalities and Maximal Monotone Mappings in Banach Spaces.
Norm fragmented weak* compact sets.
A Banach space which is a Cech-analytic space in its weak topology has fourteen measure-theoretic, geometric and topological properties. In a dual Banach space with its weak-star topology essentially the same properties are all equivalent one to another.
Norms on super-reflexive Banach spaces
Note on reflexivity and invariant means.
Nouvelles classes d'espaces de Banach à prédual unique
Numerical index with respect to an operator
We introduce new concepts of numerical range and numerical radius of one operator with respect to another one, which generalize in a natural way the known concepts of numerical range and numerical radius. We study basic properties of these new concepts and present some examples.
O některých Banachových problémech
On a characterization of reflexive Banach spaces
On a class of Hausdorff compact and GSG Banach spaces
On a class of reflexive spaces related to Ulam's conjecture on measurable cardinals.
On a conjecture of L. Veselý
On a Method of Moments
On a problem of moments of S. Rolewicz
On a question of H.H. Corson and some related problems
On a Question of Pełczyński about Strictly Singular Operators
We exhibit new examples of weakly compact strictly singular operators with dual not strictly cosingular and characterize the weakly compact strictly singular surjections with strictly cosingular adjoint as those having strictly singular bitranspose. We then obtain new examples of super-strictly singular quotient maps and show that the strictly singular quotient maps in Kalton-Peck sequences are not super-strictly singular.
On a Theorem of Dixmier.
On absolute retracts, P(S) and complemented subspaces of
On class of Banach spaces
On complex -predual spaces.