Results 21 to 30 of about 18,143,287 (301)

Forced oscillation and asymptotic behavior of solutions of linear differential equations of second order [PDF]

open access: yesOpuscula Mathematica, 2022
The paper deals with the second order nonhomogeneous linear differential equation \[(p(t) y'(t))' + q(t) y(t) = f(t),\] which is oscillatory under the assumption that \(p(t)\) and \(q(t)\) are positive, continuously differentiable and monotone functions ...
Yutaka Shoukaku
doaj   +1 more source

SECOND-ORDER INVARIANTS AND HOLOGRAPHY [PDF]

open access: yesInternational Journal of Modern Physics D, 2012
Motivated by recent works on the role of the holographic principle in cosmology, we relate a class of second-order Ricci invariants to the IR cutoff characterizing the holographic dark energy density. The choice of second-order invariants provides an invariant way to account the problem of causality for the correct cosmological cutoff, since the ...
Luongo, Orlando   +2 more
openaire   +3 more sources

Global existence and boundedness of solutions of a certain nonlinear integro-differential equation of second order with multiple deviating arguments

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we consider the global existence and boundedness of solutions for a certain nonlinear integro-differential equation of second order with multiple constant delays.
Cemil Tunç, Timur Ayhan
doaj   +1 more source

Second-order Darboux displacements [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2003
The potentials for a one dimensional Schroedinger equation that are displaced along the x axis under second order Darboux transformations, called 2-SUSY invariant, are characterized in terms of a differential-difference equation. The solutions of the Schroedinger equation with such potentials are given analytically for any value of the energy.
Samsonov, B. F.   +3 more
openaire   +2 more sources

Structure Theory for Second Order 2D Superintegrable Systems with 1-Parameter Potentials [PDF]

open access: yes, 2009
The structure theory for the quadratic algebra generated by first and second order constants of the motion for 2D second order superintegrable systems with nondegenerate (3-parameter) and or 2-parameter potentials is well understood, but the results for ...
Willard Miller Jr.   +7 more
core   +2 more sources

Second-Order Finite Automata [PDF]

open access: yesTheory of Computing Systems, 2020
AbstractTraditionally, finite automata theory has been used as a framework for the representation of possibly infinite sets of strings. In this work, we introduce the notion of second-order finite automata, a formalism that combines finite automata with ordered decision diagrams, with the aim of representing possibly infinitesets of setsof strings. Our
Alexsander Andrade de Melo   +1 more
openaire   +7 more sources

A second order cell method for Poisson's equation [PDF]

open access: yes, 2010
The Cell Method, similar to the Finite Integration Technique, is a well-established numerical method for the solution of field problems, however an often raised criticism is that it is limited to constant fields within elements.
Alotto, P.   +8 more
core   +1 more source

SATURATED DESIGNS FOR SECOND ORDER MODELS [PDF]

open access: yes, 1994
Construction of saturated designs for different types of second order models are discussed.
Ekman, Claes
core   +1 more source

Second-Order Consistencies

open access: yesJournal of Artificial Intelligence Research, 2011
In this paper, we propose a comprehensive study of second-order consistencies (i.e., consistencies identifying inconsistent pairs of values) for constraint satisfaction. We build a full picture of the relationships existing between four basic second-order consistencies, namely path consistency (PC), 3-consistency (3C), dual consistency (DC) and 2 ...
Christophe Lecoutre   +2 more
openaire   +6 more sources

Second-Order Democratic Aggregation [PDF]

open access: yes, 2018
Aggregated second-order features extracted from deep convolutional networks have been shown to be effective for texture generation, fine-grained recognition, material classification, and scene understanding. In this paper, we study a class of orderless aggregation functions designed to minimize interference or equalize contributions in the context of ...
Tsung-Yu Lin   +2 more
openaire   +2 more sources

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