Die Isomorphismengruppe der freien Gruppen
Die Isomorphismen der allgemeinen, unendlichen Gruppe mit zwei Erzeugenden. (Mit 3 Figuren im Text)
Über die Minimalzahl der Fixpunkte bei den Abbildungstypen der Ringflächen
Über die Isomorphismen unendlicher Gruppen ohne Relation
Über fixpunktfreie topologische Abbildungen geschlossener Flächen
HERMANN WEYL: Die Idee der Riemannschen Fläche
On Banach ideals determined by Banach lattices and their applications
Singular points of a convex tiling.
Bounded operators on tensor products of Banach lattices
Vector-valued Lp-convergence of orthogonal series and Lagrange interpolation.
A Banach space with a symmetric basis which is of weak cotype 2 but not of cotype 2
We prove that the symmetric convexified Tsirelson space is of weak cotype 2 but not of cotype 2.
The Maurey extension property for Banach spaces with the Gordon-Lewis property and related structures
The main result of this paper states that if a Banach space X has the property that every bounded operator from an arbitrary subspace of X into an arbitrary Banach space of cotype 2 extends to a bounded operator on X, then every operator from X to an L₁-space factors through a Hilbert space, or equivalently . If in addition X has the Gaussian average property, then it is of type 2. This implies that the same conclusion holds if X has the Gordon-Lewis property (in particular X could be a Banach...
Rosenthal operator spaces
In 1969 Lindenstrauss and Rosenthal showed that if a Banach space is isomorphic to a complemented subspace of an -space, then it is either an -space or isomorphic to a Hilbert space. This is the motivation of this paper where we study non-Hilbertian complemented operator subspaces of non-commutative -spaces and show that this class is much richer than in the commutative case. We investigate the local properties of some new classes of operator spaces for every 2 < p < ∞ which can be considered...
Tensor products of Banach lattices with Applications to the local structure of Banach lattices and spaces of absolutely summing operators
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