Results 51 to 60 of about 697 (145)

The Zero-Removing Property and Lagrange-Type Interpolation Series

open access: yes, 2011
The classical Kramer sampling theorem, which provides a method for obtaining orthogonal sampling formulas, can be formulated in a more general nonorthogonal setting.
M. A. Hernández-Medina   +5 more
core   +1 more source

Stable factorization of the Calderón problem via the Born approximation

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 6, June 2026.
Abstract In this article, we prove the existence of the Born approximation in the context of the radial Calderón problem for Schrödinger operators. The Born approximation naturally appears as the linear component of a factorization of the Calderón problem; we show that the nonlinear part, obtaining the potential from the Born approximation, enjoys ...
Thierry Daudé   +3 more
wiley   +1 more source

General Conditions for Existence of Maximal Elements via the Uncovered Set [PDF]

open access: yes
This paper disentangles the topological assumptions of classical results (e.g., Walker (1977)) on existence of maximal elements from rationality conditions. It is known from the social choice literature that under the standard topological conditions-with
John Duggan
core  

Production Equilibria in Vector Lattices [PDF]

open access: yes
The general purpose of this paper is to prove quasiequilibrium existence theorems for production economies with general consumption sets in an infinite dimensional commodity space, without assuming any monotonicity of preferences or free-disposal in ...
Monique Florenzano, Valeri Marakulin
core  

A note on integral-convexity in Banach spaces

open access: yes, 2007
In the present paper we focus on a generalization of the notion of integral convexity. This concept, introduced in [J.Y. Wang, Y.M. Ma, The integral convexity of sets and functionals in Banach spaces, J. Math. Anal. Appl. 295 (2004) 211–224] by replacing,
Satco, B.
core   +1 more source

Banach spaces in various positions

open access: yes, 2010
We formulate a general theory of positions for subspaces of a Banach space: we define equivalent and isomorphic positions, study the automorphy index a(Y,X) that measures how many non-equivalent positions Y admits in X, and obtain estimates of a(Y,X) for
Plichko, Anatolij   +3 more
core   +1 more source

A global theory of algebras of generalized functions II: tensor distributions

open access: yes, 2012
We extend the construction of [19] by introducing spaces of generalized tensor fields on smooth manifolds that possess optimal embedding and consistency properties with spaces of tensor distributions in the sense of L. Schwartz.
Steinbauer, Roland   +3 more
core  

Stability Radius And Internal Versus External Stability In Banach Spaces: An Evolution Semigroup Approach

open access: yes, 1998
. In this paper the theory of evolution semigroups is developed and used to provide a framework to study the stability of general linear control systems.
S. Clark   +3 more
core  

Linear structures in the set of non-norm-attaining operators on Banach Spaces

open access: yes, 2023
We push further the study of lineability properties related to sets from normattaining theory. As a matter of fact, we provide several results in the context of lineability, spaceability, maximal-spaceability, and (α, β)-spaceability for sets of non-norm-
Dantas, Sheldon   +2 more
core   +1 more source

A note on the solutions of a second-order evolution inclusion in non separable Banach spaces [PDF]

open access: yes, 2017
summary:We consider a Cauchy problem associated to a second-order evolution inclusion in non separable Banach spaces under Filippov type assumptions and we prove the existence of mild ...
Cernea, Aurelian
core   +1 more source

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