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Displaying 361 – 380 of 445

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.

Representing measures for the disc algebra and for the ball algebra

Raymond Brummelhuis, Jan Wiegerinck (1991)

Annales Polonici Mathematici

We consider the set of representing measures at 0 for the disc and the ball algebra. The structure of the extreme elements of these sets is investigated. We give particular attention to representing measures for the 2-ball algebra which arise by lifting representing measures for the disc algebra.

Representing non-weakly compact operators

Manuel González, Eero Saksman, Hans-Olav Tylli (1995)

Studia Mathematica

For each S ∈ L(E) (with E a Banach space) the operator R(S) ∈ L(E**/E) is defined by R(S)(x** + E) = S**x** + E(x** ∈ E**). We study mapping properties of the correspondence S → R(S), which provides a representation R of the weak Calkin algebra L(E)/W(E) (here W(E) denotes the weakly compact operators on E). Our results display strongly varying behaviour of R. For instance, there are no non-zero compact operators in Im(R) in the case of $L^{1}$ and C(0,1), but R(L(E)/W(E)) identifies isometrically with...

Representing the algebra of regulated functions as an algebra of continuous functions

G. De Marco (1990)

Rendiconti del Seminario Matematico della Università di Padova

Representing trees as relatively compact subsets of the first Baire class

S. Todorčević (2005)

Bulletin, Classe des Sciences Mathématiques et Naturelles, Sciences mathématiques

Reproducing kernels and contractive divisors in Bergman spaces

Zapiski naucnych seminarov POMI

Reproducing kernels and multiple interpolation by holomorphic functions

D. R. Georgijević (1986)

Matematički Vesnik

Reproducing kernels and Riccati equations

Harry Dym (2001)

International Journal of Applied Mathematics and Computer Science

The purpose of this paper is to exhibit a connection between the Hermitian solutions of matrix Riccati equations and a class of finite dimensional reproducing kernel Krein spaces. This connection is then exploited to obtain minimal factorizations of rational matrix valued functions that are J-unitary on the imaginary axis in a natural way.

Reproducing Kernels for Harmonic Bergman Spaces of the Unit Ball.

Jie Miao (1998)

Monatshefte für Mathematik

Reproductibilité de l... dans les produits tensoriels.

C. Samuel (1982)

Mathematica Scandinavica

Resistance Conditions and Applications

Juha Kinnunen, Pilar Silvestre (2013)

Analysis and Geometry in Metric Spaces

This paper studies analytic aspects of so-called resistance conditions on metric measure spaces with a doubling measure. These conditions are weaker than the usually assumed Poincaré inequality, but however, they are sufficiently strong to imply several useful results in analysis on metric measure spaces. We show that under a perimeter resistance condition, the capacity of order one and the Hausdorff content of codimension one are comparable. Moreover, we have connections to the Sobolev inequality...

Resoluciones proyectivas del operador identidad y bases de Markushevich en ciertos espacios de Banach.

M. Valdivia (1990)

Revista de la Real Academia de Ciencias Exactas Físicas y Naturales

Résolution d'équations aux dérivées partielles dans des espaces de distributions d'ordre de régularité variable

André Unterberger (1971)

Annales de l'institut Fourier

L’objet de cet article est de prouver des théorèmes du genre suivant : “Soient $P$ un opérateur différentiel sur $R^{n}$ , $ρ$ une fonction $C^{\infty}$ à valeurs réelles, $k$ un nombre réel et $u$ une distribution à support compact : alors, si $P u \in H^{ρ}$ , $u \in H^{ρ + k}$ ” ; l’espace $H^{ρ}$ est ici l’espace de Sobolev “d’ordre variable” associé à $ρ$ ; bien entendu, il faut des hypothèses sur $P$ , $ρ$ et $k$ . Les cas traités sont :1) certains opérateurs à coefficients variables déjà considérés dans le chapitre VIII du livre de L. Hörmander ;2) tous les opérateurs...

Currently displaying 361 – 380 of 445

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Displaying 361 – 380 of 445

Representing and absolutely representing systems

Representing measures for the disc algebra and for the ball algebra

Representing non-weakly compact operators

Representing the algebra of regulated functions as an algebra of continuous functions

Representing trees as relatively compact subsets of the first Baire class

Reproducing kernels and contractive divisors in Bergman spaces

Reproducing kernels and multiple interpolation by holomorphic functions

Reproducing kernels and Riccati equations

Reproducing Kernels for Harmonic Bergman Spaces of the Unit Ball.

Reproductibilité de l... dans les produits tensoriels.

Resistance Conditions and Applications

Resoluciones proyectivas del operador identidad y bases de Markushevich en ciertos espacios de Banach.

Résolution d'équations aux dérivées partielles dans des espaces de distributions d'ordre de régularité variable

Resolution of identity in certain metrizable locally convex spaces.

Resolution of the cohomology comparison problem for amenable Banach algebras.

Resolutions of the identity in certain Banach spaces.

Resolventenkerne, Carleman-Operatoren in LP-Räumen und Hille-Tamarkin-Operatoren.

Resolving Banach spaces

Resonances and convergence of perturbation theory for N-body atomic systems in external AC-electric field

Restricted range simultaneous approximation and interpolation with preservation of the norm

Currently displaying 361 – 380 of 445