Results 1 to 10 of about 52,931 (113)

Estimates for evolutionary partial differential equations in classical function spaces

open access: yesForum of Mathematics, Sigma, 2023
We establish new local and global estimates for evolutionary partial differential equations in classical Banach and quasi-Banach spaces that appear most frequently in the theory of partial differential equations.
Alejandro J. Castro   +3 more
doaj   +1 more source

On integration with respect to filter

open access: yesVisnik Harkivsʹkogo Nacionalʹnogo Universitetu im. V.N. Karazina. Cepiâ Matematika, Prikladna Matematika i Mehanika, 2023
This article is devoted to the study of one generalization of the Riemann integral. Namely, in the paper, it was observed that the classical definition of the Riemann integral over a finite segment as a limit of integral sums, when the diameter of the ...
Dmytro Seliutin
doaj   +1 more source

Continuous Frames, Function Spaces, and the Discretization Problem [PDF]

open access: yes, 2004
A continuous frame is a family of vectors in a Hilbert space which allows reproductions of arbitrary elements by continuous superpositions. Associated to a given continuous frame we construct certain Banach spaces.
Communicated Karlheinz Gröchenig   +2 more
core   +2 more sources

Fourier multiplier theorems involving type and cotype [PDF]

open access: yes, 2017
In this paper we develop the theory of Fourier multiplier operators $T_{m}:L^{p}(\mathbb{R}^{d};X)\to L^{q}(\mathbb{R}^{d};Y)$, for Banach spaces $X$ and $Y$, $1\leq p\leq q\leq \infty$ and $m:\mathbb{R}^d\to \mathcal{L}(X,Y)$ an operator-valued symbol ...
Rozendaal, Jan, Veraar, Mark
core   +3 more sources

Field-Theoretic Weyl Deformation Quantization of Enlarged Poisson Algebras [PDF]

open access: yes, 2008
$C^*$-algebraic Weyl quantization is extended by allowing also degenerate pre-symplectic forms for the Weyl relations with infinitely many degrees of freedom, and by starting out from enlarged classical Poisson algebras.
Honegger, Reinhard   +2 more
core   +6 more sources

The ideal of weakly compactly generated operators acting on a Banach space [PDF]

open access: yes, 2013
We call a bounded linear operator acting between Banach spaces weakly compactly generated ($\mathsf{WCG}$ for short) if its range is contained in a weakly compactly generated subspace of its codomain.
Kania, Tomasz, Kochanek, Tomasz
core   +2 more sources

Banach spaces and Ramsey Theory: some open problems [PDF]

open access: yes, 2010
We discuss some open problems in the Geometry of Banach spaces having Ramsey-theoretic flavor. The problems are exposed together with well known results related to them.Comment: 17 pages, no figures; RACSAM, to ...
Dodos, Pandelis   +2 more
core   +1 more source

Fredholm theory for band-dominated and related operators: a survey [PDF]

open access: yes, 2013
This paper presents the Fredholm theory on l^p-spaces for band-dominated operators and important subclasses, such as operators in the Wiener algebra. It particularly closes several gaps in the previously known results for the case p=\infty and addresses ...
Seidel, Markus
core   +1 more source

Stochastic evolution equations driven by Liouville fractional Brownian motion [PDF]

open access: yes, 2009
Let H be a Hilbert space and E a Banach space. We set up a theory of stochastic integration of L(H,E)-valued functions with respect to H-cylindrical Liouville fractional Brownian motions (fBm) with arbitrary Hurst parameter in the interval (0,1).
A. Ohashi   +46 more
core   +4 more sources

Controllability on infinite-dimensional manifolds [PDF]

open access: yes, 2012
Following the unified approach of A. Kriegl and P.W. Michor (1997) for a treatment of global analysis on a class of locally convex spaces known as convenient, we give a generalization of Rashevsky-Chow's theorem for control systems in regular connected ...
A. Isidori   +61 more
core   +3 more sources

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