Density conditions in Fréchet and (DF)-spaces.
We survey our main results on the density condition for Fréchet spaces and on the dual density condition for (DF)-spaces (cf. Bierstedt and Bonet (1988)) as well as some recent developments.
Dentabilité et points extrémaux
Der Graphensatz von A. P. und W. Robertson für S-Räume.
Der induktive Limes von abzählbar vielen FH-Räumen. Vereinigungsverfahren..
Der Satz über offene Abbildungen in topologischen Vektorräumen.
Der Satz von Choquet-Bishop-de Leeuw für konvexe nicht kompakte Mengen straffer Maße.
Der „Satz von der gleichmässigen Beschranktheit‟ für eine Klasse nichtlinearer Operatoren
Der Satz von Dunford-Pettis und die Darstellung von Massen mit Werten in lokalkonvexen Räumen.
Description lagrangienne d'un boson scalaire à l'aide d'un triplet nucléaire
Description of all regular cones in a Hilbert space.
Descriptive properties of elements of biduals of Banach spaces
If E is a Banach space, any element x** in its bidual E** is an affine function on the dual unit ball that might possess a variety of descriptive properties with respect to the weak* topology. We prove several results showing that descriptive properties of x** are quite often determined by the behaviour of x** on the set of extreme points of , generalizing thus results of J. Saint Raymond and F. Jellett. We also prove a result on the relation between Baire classes and intrinsic Baire classes...
Determining subspaces of conjugate locally convex spaces
Deux espaces de Banach et leurs modèles étalés
Deux essais de généralisation du critère de Grothendieck (compacité faible des ensembles de mesures)
Deux types nouveaux d'extension de formes linéaires positives et continues
Deviation from weak Banach–Saks property for countable direct sums
We introduce a seminorm for bounded linear operators between Banach spaces that shows the deviation from the weak Banach-Saks property. We prove that if (Xν) is a sequence of Banach spaces and a Banach sequence lattice E has the Banach-Saks property, then the deviation from the weak Banach-Saks property of an operator of a certain class between direct sums E(Xν) is equal to the supremum of such deviations attained on the coordinates Xν. This is a quantitative version for operators of the result...
Diagonal and Convolution Operators as Elements of Operator Ideals.
Diagonal mappings between sequence spaces
Diagonal operators on spaces of measurable functions.
Diagonal operators on spaces of measurable functions