Results 1 to 10 of about 4,769 (190)

On the Introduction of Convergence Factors into Summable Series and Summable Integrals [PDF]

open access: yesTransactions of the American Mathematical Society, 1907
The object of this paper is to develop certain general theorems about convergence factors. In the case of series we shall mean by convergence factors a set of functions of a parameter which, when introduced as factors of the successive terms of the series, cause a divergent series to converge, or a series which is already convergent to converge more ...
C. Moore
openaire   +2 more sources

Summation of divergent series and Borel summability for strongly dissipative equations with periodic or quasi-periodic forcing terms [PDF]

open access: yes, 2005
We consider a class of second order ordinary differential equations describing one-dimensional systems with a quasi-periodic analytic forcing term and in the presence of damping.
BARTUCCELLI M.V, DEANE, GENTILE G, J.H.B
core   +2 more sources

K-homological finiteness and hyperbolic groups [PDF]

open access: yes, 2015
Motivated by classical facts concerning closed manifolds, we introduce a strong finiteness property in K-homology. We say that a C*-algebra has uniformly summable K-homology if all its K-homology classes can be represented by Fredholm modules which are ...
Emerson, Heath, Nica, Bogdan
core   +1 more source

Approximation of high-dimensional parametric PDEs [PDF]

open access: yes, 2015
Parametrized families of PDEs arise in various contexts such as inverse problems, control and optimization, risk assessment, and uncertainty quantification. In most of these applications, the number of parameters is large or perhaps even infinite.
Cohen, Albert, Devore, Ronald
core   +4 more sources

Constructive Matrix Theory [PDF]

open access: yes, 2007
We extend the technique of constructive expansions to compute the connected functions of matrix models in a uniform way as the size of the matrix increases. This provides the main missing ingredient for a non-perturbative construction of the $\phi^{\star
  +14 more
core   +4 more sources

Borel summability and Lindstedt series

open access: yes, 2006
Resonant motions of integrable systems subject to perturbations may continue to exist and to cover surfaces with parametric equations admitting a formal power expansion in the strength of the perturbation.
A. Giuliani   +9 more
core   +1 more source

Sparse Deterministic Approximation of Bayesian Inverse Problems [PDF]

open access: yes, 2011
We present a parametric deterministic formulation of Bayesian inverse problems with input parameter from infinite dimensional, separable Banach spaces. In this formulation, the forward problems are parametric, deterministic elliptic partial differential ...
A M Stuart   +12 more
core   +3 more sources

The Method of almost convergence with operator of the form fractional order and applications

open access: yes, 2016
The purpose of this paper is twofold. First, basic concepts such as Gamma function, almost convergence, fractional order difference operator and sequence spaces are given as a survey character.
Kadak, Ugur, Kirisci, Murat
core   +1 more source

Spectral Metric Spaces on Extensions of C*-Algebras [PDF]

open access: yes, 2016
We construct spectral triples on C*-algebraic extensions of unital C*-algebras by stable ideals satisfying a certain Toeplitz type property using given spectral triples on the quotient and ideal.
Hawkins, Andrew, Zacharias, Joachim
core   +3 more sources

Constructive Field Theory in Zero Dimension

open access: yes, 2009
In this pedagogical note we propose to wander through five different methods to compute the number of connected graphs of the zero-dimensional $\phi^4$ field theory,in increasing order of sophistication.
Rivasseau, V.
core   +5 more sources

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