Results 11 to 20 of about 222 (76)

Variational approach to a class of impulsive differential equations

open access: yesBoundary Value Problems, 2014
In this article, the author discusses the existence of solutions for a class of impulsive differential equations by means of a variational approach different from earlier approaches.MSC:34B37, 45G10, 47H30, 47J30.
D. Guo
semanticscholar   +2 more sources

Multiplicity of positive solutions for Kirchhoff type problem involving critical exponent and sign-changing weight functions

open access: yesBoundary Value Problems, 2014
This paper is devoted to the study of a class of Kirchhoff type problems with critical exponent, concave nonlinearity, and sign-changing weight functions.
Changmu Chu
semanticscholar   +2 more sources

Existence and multiplicity results for fractional p(x)-Laplacian Dirichlet problem

open access: yesMoroccan Journal of Pure and Applied Analysis, 2022
In this paper, we study a class of fractional p(x)-Laplacian Dirichlet problems in a bounded domain with Lipschitz boundary. Using variational methods, we prove in different situations the existence and multiplicity of solutions.
Chakrone O.   +3 more
doaj   +1 more source

Nonsmooth set variational inequality problems and optimality criteria for set optimization

open access: yes, 2020
In this work, set-valued optimization problems are considered according to an order relation, which is a partial order on the family such that contains nonempty bounded sets of the space. A generalized convexity is defined for set-valued mapping by using
E. Karaman
semanticscholar   +1 more source

On a version of Trudinger-Moser inequality with M\"obius shift invariance [PDF]

open access: yes, 2009
The paper raises a question about the optimal critical nonlinearity for the Sobolev space in two dimensions, connected to loss of compactness, and discusses the pertinent concentration compactness framework. We study properties of the improved version of
Adimurthi, Tintarev, K.
core   +2 more sources

Fixed points of nonexpansive potential operators in Hilbert spaces

open access: yesFixed Point Theory and Applications, 2012
In this paper, we show the impact of certain general results by the author on the topic described in the title. Here is a sample:Let (X,〈⋅,⋅〉) be a real Hilbert space and let T:X→X be a nonexpansive potential operator.Then, the following alternative ...
B. Ricceri
semanticscholar   +2 more sources

From Nash to Cournot-Nash equilibria via the Monge-Kantorovich problem [PDF]

open access: yes, 2014
The notion of Nash equilibria plays a key role in the analysis of strategic interactions in the framework of $N$ player games. Analysis of Nash equilibria is however a complex issue when the number of players is large.
Blanchet, Adrien, Carlier, Guillaume
core   +6 more sources

Simple study designs in ecology produce inaccurate estimates of biodiversity responses

open access: yesJournal of Applied Ecology, Volume 56, Issue 12, Page 2742-2754, December 2019., 2019
We suggest that more investment in more robust designs is needed in ecology since inferences from simpler designs, even with large sample sizes may be misleading. Facilitating this requires longer‐term funding and stronger research–practice partnerships. We also propose ‘accuracy weights’ and demonstrate how they can weight studies in three recent meta‐
Alec P. Christie   +6 more
wiley   +1 more source

Existence of fast homoclinic orbits for a class of second-order non-autonomous problems

open access: yesBoundary Value Problems, 2014
By applying the mountain pass theorem and the symmetric mountain pass theorem in critical point theory, the existence and multiplicity of fast homoclinic solutions are obtained for the following second-order non-autonomous problem: u¨(t)+q(t)u˙(t)−a(t)|u(
Qiongfen Zhang   +2 more
semanticscholar   +2 more sources

An optimal bound for nonlinear eigenvalues and torsional rigidity on domains with holes

open access: yes, 2020
In this paper we prove an optimal upper bound for the first eigenvalue of a Robin-Neumann boundary value problem for the p-Laplacian operator in domains with convex holes.
Della Pietra, Francesco   +1 more
core   +1 more source

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