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Representations of the spaces C ( N ) H k , p ( N )

A. Albanese, V. Moscatelli (2000)

Studia Mathematica

We give a representation of the spaces C ( N ) H k , p ( N ) as spaces of vector-valued sequences and use it to investigate their topological properties and isomorphic classification. In particular, it is proved that C ( N ) H k , 2 ( N ) is isomorphic to the sequence space s l 2 ( l 2 ) , thereby showing that the isomorphy class does not depend on the dimension N if p=2.

Representing and absolutely representing systems

V. Kadets, Yu. Korobeĭnik (1992)

Studia Mathematica

We introduce various classes of representing systems in linear topological spaces and investigate their connections in spaces with different topological properties. Let us cite a typical result of the paper. If H is a weakly separated sequentially separable linear topological space then there is a representing system in H which is not absolutely representing.

Résumé des résultats essentiels dans la théorie des produits tensoriels topologiques et des espaces nucléaires

Alexander Grothendieck (1952)

Annales de l'institut Fourier

L’auteur donne un résumé des résultats essentiels de son travail “Produits tensoriels topologiques et espaces nucléaires” (à paraître dans Memoirs of the Am. Math. Soc.), en essayant de faire ressortir les idées directrices. Soient E et F deux espaces localement convexes, on définit d’abord deux topologies naturelles sur E F , qui donnent des complétés E ^ F et E ^ ^ F , qu’on explicite dans divers cas importants, et dont on élucide les propriétés algébrico-topologiques, notamment à l’égard de la notion de produit...

Right inverses for partial differential operators on Fourier hyperfunctions

Michael Langenbruch (2007)

Studia Mathematica

We characterize the partial differential operators P(D) admitting a continuous linear right inverse in the space of Fourier hyperfunctions by means of a dual (Ω̅)-type estimate valid for the bounded holomorphic functions on the characteristic variety V P near d . The estimate can be transferred to plurisubharmonic functions and is equivalent to a uniform (local) Phragmén-Lindelöf-type condition.

Rotundity and smoothness of convex bodies in reflexive and nonreflexive spaces

Victor Klee, Libor Veselý, Clemente Zanco (1996)

Studia Mathematica

For combining two convex bodies C and D to produce a third body, two of the most important ways are the operation ∓ of forming the closure of the vector sum C+D and the operation γ̅ of forming the closure of the convex hull of C ⋃ D. When the containing normed linear space X is reflexive, it follows from weak compactness that the vector sum and the convex hull are already closed, and from this it follows that the class of all rotund bodies in X is stable with respect to the operation ∓ and the class...

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