Ein Satz über gewichtete Verschiebungen.
Entropy numbers of certain summation operators.
Entropy numbers of r-nuclear operators between spaces
Erratum: “Lower bounds for some factorable matrices" [Int. J. Math. Math. Sci. 2006, No. 14, Article ID 76135 (2006; Zbl pre05231649)].
Erratum to "Operators on spaces of analytic functions" (Studia Math, 108 (1994), 49-54)
Estructuras ordenadas relacionadas con el teorema de la gráfica cerrada.
Exponential dichotomy of difference equations in -phase spaces on the half-line.
Extension of operators from weak*-closed sub-spaces of into C(K) spaces
It is proved that every operator from a weak*-closed subspace of into a space C(K) of continuous functions on a compact Hausdorff space K can be extended to an operator from to C(K).
Extremal operators and oblique projections