Results 91 to 100 of about 9,155,817 (192)

Reconstructing the potential function for indefinite Sturm-Liouville problems using infinite product forms

open access: yesElectronic Journal of Differential Equations, 2013
In this article we consider the linear second-order equation of Sturm-Liouville type $$ y''+(lambdaphi^2(t)-q(t))y=0, quad 0leq tleq 1, $$ where $lambda$ is a real parameter, $q(t)$ is the potential function and $phi^2(t)$ is the weight function ...
Mohammad Dehghan, Ali Asghar Jodayree
doaj  

An Abstract Linking Theorem Applied to Indefinite Problems Via Spectral Properties

open access: yesAdvanced Nonlinear Studies, 2019
An abstract linking result for Cerami sequences is proved without the Cerami condition. It is applied directly in order to prove the existence of critical points for a class of indefinite problems in infinite-dimensional Hilbert Spaces.
Maia Liliane A., Soares Mayra
doaj   +1 more source

Obstacles to Macrosecuritization of Global Threats: Cases of Nuclear Weapons and Climate Change

open access: yesСравнительная политика
Despite the multitude of attempts to macrosecuritize nuclear weapons and climate change, none of them has succeeded so far. Existing studies struggle to convincingly explain these failures, which can be attributed both to the general neglect of ...
Ye. I. Uchaev, A. A. Kvartalnov
doaj   +1 more source

Indefinite Kernel Fisher discriminant

open access: yes, 2008
Indefinite kernels arise in practice, e.g. from problem-specific kernel construction. Therefore, it is necessary to understand the behavior and suitability of classifiers in the corresponding indefinite inner product spaces.
Haasdonk, Bernard   +3 more
core   +1 more source

Existence and multiplicity of solutions for a class of new nonlocal problem with indefinite potential

open access: yesDemonstratio Mathematica
This paper is devoted to study a class of new nonlocal problem with indefinite potential. Using linking theorem and symmetric mountain pass theorem, the existence and multiplicity of solutions to this problem are obtained.
Chu Changmu, Luo Feng, Ming Yanting
doaj   +1 more source

Nodal Solutions for Nonlinear Non-Homogeneous Robin Problems with an Indefinite Potential

open access: yes, 2018
We consider a nonlinear Robin problem driven by a non-homogeneous differential operator plus an indefinite potential term. The reaction function is Carathéodory with arbitrary growth near±∞. We assume that it is odd and exhibits a concave term near zero.
Leszek Gasiński   +1 more
core   +1 more source

Probabilistic channel distillation via indefinite causal order

open access: yesPhysical Review Research
The quantum switch has been widely studied as a prototypical example of indefinite causal order in quantum information processing. However, the potential advantages of utilizing more general forms of indefinite causal orders remain largely unexplored. We
Spiros Kechrimparis   +2 more
doaj   +1 more source

FY 2015 Small Business Indefinite Delivery Indefinite Quality Report

open access: yes, 2015
This report discusses USAID's use of small businesses under Indefinite Delivery Indefinite Quality Contracts (IDIQs) during the 2015 fiscal ...

core  

Permanent and Indefinite Appropriations [PDF]

open access: yes, 1880
Permanent and Indefinite Appropriations.

core  

On certain nonlinear elliptic systems with indefinite terms

open access: yesElectronic Journal of Differential Equations, 2002
We consider an elliptic quasi linear systems with indefinite term on a bounded domain. Under suitable conditions, existence and positivity results for solutions are given. Submitted April 2, 2002. Published October 2, 2002.
Ahmed Bensedik, Mohammed Bouchekif
doaj  

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