Relations between limit-point and Dirichlet properties of second-order difference operators.
Delil, A. (2007)
Advances in Difference Equations [electronic only]
I. Ekeland (1978/1979)
Séminaire Analyse fonctionnelle (dit "Maurey-Schwartz")
Manuel Fernández, Isidro Palacios (1995)
Extracta Mathematicae
T. Bartoszyński, M. Džamonja, L. Halbeisen, E. Murtinová, A. Plichko (2009)
Studia Mathematica
Leszek Skrzypczak (1989)
Banach Center Publications
Dirk Praetorius (2002)
Colloquium Mathematicae
We provide for every 2 ≤ k ≤ n an n-dimensional Banach space E with a unique distance ellipsoid such that there are precisely k linearly independent contact points between and . The corresponding result holds for spaces with non-unique distance ellipsoids as well. We construct n-dimensional Banach spaces E such that one distance ellipsoid has precisely k linearly independent contact points and all other distance ellipsoids have less than k-1 such points.
Wolfgang Ruess, Charles Stegall (1985)
Studia Mathematica
G. Albinus (1970)
Studia Mathematica
Kaewkhao, A., Sokhuma, K. (2010)
Abstract and Applied Analysis
Fernando Cobos, Luz M. Fernández-Cabrera, Antón Martínez (2006)
RACSAM
This note deals with interpolation methods defined by means of polygons. We show necessary and sufficient conditions for compactness of operators acting from a J-space into a K-space.
Marián J. Fabián, Martin Heisler, Eva Matoušková (1998)
Commentationes Mathematicae Universitatis Carolinae
A family of compact spaces containing continuous images of Radon-Nikod’ym compacta is introduced and studied. A family of Banach spaces containing subspaces of Asplund generated (i.e., GSG) spaces is introduced and studied. Further, for a continuous image of a Radon-Nikod’ym compact we prove: If is totally disconnected, then it is Radon-Nikod’ym compact. If is adequate, then it is even Eberlein compact.
Latrach, Khalid, Dehici, Abdelkader (2003)
International Journal of Mathematics and Mathematical Sciences
Z. Lipecki (1998)
Collectanea Mathematica
P. Fernández-Martínez (2003)
Bollettino dell'Unione Matematica Italiana
We study interpolation of bilinear operators by the polygons methods. We prove an interpolation theorem of type into spaces, and show the optimality of the precedings results.
Chmieliński, Jacek (2007)
Banach Journal of Mathematical Analysis [electronic only]
Sababheh, M., Khalil, R. (2009)
The Journal of Nonlinear Sciences and its Applications
Vladimir Kadets, Nigel Kalton, Dirk Werner (2003)
Studia Mathematica
We investigate rich subspaces of L₁ and deduce an interpolation property of Sidon sets. We also present examples of rich separable subspaces of nonseparable Banach spaces and we study the Daugavet property of tensor products.
Wagdy Gomaa El-Sayed, Krzysztof Fraczek (1996)
Commentationes Mathematicae Universitatis Carolinae
The aim of this paper is to derive some relationships between the concepts of the property of strong introduced recently by Hong-Kun Xu and the so-called characteristic of near convexity defined by Goebel and Sȩkowski. Particularly we provide very simple proof of a result obtained by Hong-Kun Xu.
Charles R. DePrima, W.V. Petryshyn (1971)
Mathematische Zeitschrift
Ho Duc Viet (1975)
Commentationes Mathematicae Universitatis Carolinae