Results 1 to 10 of about 45,598 (184)

Phase space properties of charged fields in theories of local observables [PDF]

open access: yes, 1994
Within the setting of algebraic quantum field theory a relation between phase-space properties of observables and charged fields is established. These properties are expressed in terms of compactness and nuclearity conditions which are the basis for the ...
Buchholz, D., D'Antoni, C.
core   +3 more sources

Localized Frames and Compactness [PDF]

open access: yes, 2015
We introduce the concept of weak-localization for generalized frames and use this concept to define a class of weakly localized operators. This class contains many important operators, including: Short Time Fourier Transform multipliers, Calderon ...
Batayneh, Fawwaz, Mitkovski, Mishko
core   +1 more source

Limit operators, collective compactness, and the spectral theory of infinite matrices [PDF]

open access: yes, 2010
In the first half of this memoir we explore the interrelationships between the abstract theory of limit operators (see e.g. the recent monographs of Rabinovich, Roch and Silbermann (2004) and Lindner (2006)) and the concepts and results of the ...
Chandler-Wilde, Simon N., Lindner, Marko
core   +3 more sources

Nonparametric identification of positive eigenfunctions [PDF]

open access: yes, 2014
Important features of certain economic models may be revealed by studying positive eigenfunctions of appropriately chosen linear operators. Examples include long-run risk-return relationships in dynamic asset pricing models and components of marginal ...
Christensen, Timothy
core   +2 more sources

On compactness of Laplace and Stieltjes type transformations in Lebesgue spaces [PDF]

open access: yes, 2011
We obtain criteria for integral transformations of Laplace and Stieltjes type to be compact on Lebesgue spaces of real functions on the ...
Ushakova, Elena P.
core   +1 more source

A variational approach to dissipative SPDEs with singular drift [PDF]

open access: yes, 2017
We prove global well-posedness for a class of dissipative semilinear stochastic evolution equations with singular drift and multiplicative Wiener noise. In particular, the nonlinear term in the drift is the superposition operator associated to a maximal ...
Marinelli, Carlo, Scarpa, Luca
core   +3 more sources

Generalized compactness in linear spaces and its applications

open access: yes, 2009
The class of subsets of locally convex spaces called $\mu$-compact sets is considered. This class contains all compact sets as well as several noncompact sets widely used in applications.
A. D. Ioffe   +24 more
core   +1 more source

Intrinsic operators from holomorphic function spaces to growth spaces

open access: yes, 2017
We determine the boundedness and compactness of a large class of operators, mapping from general Banach spaces of holomorphic functions into a particular type of spaces of functions determined by the growth of the functions, or the growth of the ...
Zorboska, Nina
core   +1 more source

Right Markov processes and systems of semilinear equations with measure data

open access: yes, 2015
In the paper we prove the existence of probabilistic solutions to systems of the form $-Au=F(x,u)+\mu$, where $F$ satisfies a generalized sign condition and $\mu$ is a smooth measure.
Klimsiak, Tomasz
core   +1 more source

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