Results 31 to 40 of about 238,932 (290)

A Local limit theorem for directed polymers in random media: the continuous and the discrete case [PDF]

open access: yes, 2005
In this article, we consider two models of directed polymers in random environment: a discrete model and a continuous model. We consider these models in dimension greater or equal to 3 and we suppose that the normalized partition function is bounded in L^
Vargas, Vincent
core   +6 more sources

Perturbations in Müntz's theorem

open access: yesJournal of Approximation Theory, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

A perturbed ergodic theorem [PDF]

open access: yesProceedings of the American Mathematical Society, 1999
Using a version of an ergodic lemma due to Cuculescu and Foiaş, we prove a pointwise ergodic theorem for L 1 L^1
openaire   +2 more sources

Weyl’s theorem for perturbations of paranormal operators [PDF]

open access: yesProceedings of the American Mathematical Society, 2007
A bounded linear operator T ∈ L (
Aiena, Pietro, Guillen, Jesús R.
openaire   +2 more sources

Mixed semicontinuous perturbation of a second order nonconvex sweeping process

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2008
We prove a theorem on the existence of solutions of a second order differential inclusion governed by a class of nonconvex sweeping process with a mixed semicontinuous perturbation.
D. Azzam-Laouir
doaj   +1 more source

A Fold Bifurcation Theorem of Degenerate Solutions in a Perturbed Nonlinear Equation

open access: yesAbstract and Applied Analysis, 2011
We consider a nonlinear equation F(ε,λ,u)=0, where the parameter ε is a perturbation parameter, F is a differentiable mapping from R×R×X to Y, and X, Y are Banach spaces.
Ping Liu, Yuwen Wang
doaj   +1 more source

Long Wavelength Coherency in Well Connected Electric Power Networks

open access: yesIEEE Access, 2022
We investigate coherent oscillations in large scale transmission power grids, where large groups of generators respond in unison to a distant disturbance. Such long wavelength coherent phenomena are known as inter-area oscillations.
Julian Fritzsch, Philippe Jacquod
doaj   +1 more source

Non-equilibrium almost-stationary states and linear response for gapped quantum systems

open access: yes, 2019
We prove the validity of linear response theory at zero temperature for perturbations of gapped Hamiltonians describing interacting fermions on a lattice.
Teufel, Stefan
core   +1 more source

Positivity and contractivity in the dynamics of clusters’ splitting with derivative of fractional order

open access: yesOpen Mathematics, 2015
Classical models of clusters’ fission have failed to fully explain strange phenomenons like the phenomenon of shattering (Ziff et al., 1987) and the sudden appearance of infinitely many particles in some systems with initial finite particles number ...
Goufo Emile Franc Doungmo   +1 more
doaj   +1 more source

Derivatives of Multilinear Functions of Matrices

open access: yes, 2013
Perturbation or error bounds of functions have been of great interest for a long time. If the functions are differentiable, then the mean value theorem and Taylor's theorem come handy for this purpose. While the former is useful in estimating $\|f(A+X)-f(
Bhatia, Rajendra, Nielsen, Frank
core   +1 more source

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