Results 51 to 60 of about 3,569,907 (305)

Bifurcation in nonlinearizable eigenvalue problems for ordinary differential equations of fourth order with indefinite weight

Electronic Journal of Qualitative Theory of Differential Equations, 2017
We consider a nonlinearizable eigenvalue problem for the beam equation with an indefinite weight function. We investigate the structure of bifurcation set and study the behavior of connected components of the solution set bifurcating from the line of ...
Ziyatkhan Aliyev, Rada Huseynova
doaj   +1 more source

Existence of positive solutions of a superlinear boundary value problem with indefinite weight

, 2015
We deal with the existence of positive solutions for a two-point boundary value problem associated with the nonlinear second order equation $u''+a(x)g(u)=0$. The weight $a(x)$ is allowed to change its sign. We assume that the function $g\colon\mathopen{[}
A. Zettl, D. Bonheure, D. G. de Figueiredo, G. Feltrin, H. Amann, H. Berestycki, K. Lan, L. H. Erbe, M. Gaudenzi, R. D. Nussbaum, R. D. Nussbaum, R. Manásevich   +11 more
core   +1 more source

A functional model, eigenvalues, and finite singular critical points for indefinite Sturm-Liouville operators

, 2009
Eigenvalues in the essential spectrum of a weighted Sturm-Liouville operator are studied under the assumption that the weight function has one turning point.
A. Fleige, A. Fleige, A. Fleige, A. Fleige, A.B. Mingarelli, A.N. Kochubei, B. Curgus, B. Ćurgus, B. Ćurgus, B. Ćurgus, B.M. Levitan, D. Hilbert, E.A. Coddington, E.C. Titchmarsh, E.C. Titchmarsh, F. Gesztesy, F.V. Atkinson, F.V. Atkinson, H. Langer, I. Knowles, I.M. Karabash, I.M. Karabash, I.M. Karabash, I.M. Karabash, I.M. Karabash, I.M. Karabash, I.M. Karabash, I.M. Karabash, I.S. Kac, J. Behrndt, J. Behrndt, J. Behrndt, J. Weidmann, J.F. Brasche, M. Klaus, M.G. Krein, P. Binding, P. Jonas, P. Jonas, R. Beals, R. Beals, R.C. Gilbert, R.G.D. Richardson, V.A. Derkach, V.A. Derkach, V.A. Derkach, V.A. Derkach, V.A. Derkach, V.I. Gorbachuk, W. Allegretto   +49 more
core   +3 more sources

Homogenization of Steklov spectral problems with indefinite density function in perforated domains

, 2012
The asymptotic behavior of second order self-adjoint elliptic Steklov eigenvalue problems with periodic rapidly oscillating coefficients and with indefinite (sign-changing) density function is investigated in periodically perforated domains.
Douanla, Hermann Yonta
core   +1 more source

On indefinite modular forms of weight one

Journal of the Mathematical Society of Japan, 1986
Let us suppose that the ring class field \(N_ f\) modulo f (f\(\in {\mathbb{N}})\) of an imaginary quadratic field \(\Sigma\) is a dihedral extension over \({\mathbb{Q}}\) with Galois group \(D_ 4\). Let K be the unique real quadratic subfield of \(N_ f\).
HIRAMATSU, Toyokazu, ISHII, Noburo, MIMURA, Yoshio   +2 more
openaire   +3 more sources

Existence and Multiplicity of Periodic Solutions to Indefinite Singular Equations Having a Non-monotone Term with Two Singularities

Advanced Nonlinear Studies, 2019
Efficient conditions guaranteeing the existence and multiplicity of T-periodic solutions to the second order differential equation u′′=h⁢(t)⁢g⁢(u){u^{\prime\prime}=h(t)g(u)} are established.
Hakl Robert, Zamora Manuel
doaj   +1 more source

Positive solutions to indefinite Neumann problems when the weight has positive average

, 2015
We deal with positive solutions for the Neumann boundary value problem associated with the scalar second order ODE $$ u" + q(t)g(u) = 0, \quad t \in [0, T], $$ where $g: [0, +\infty[\, \to \mathbb{R}$ is positive on $\,]0, +\infty[\,$ and $q(t)$ is an ...
A. Boscaggin, A. Boscaggin, A. Boscaggin, A. Boscaggin, Alberto Boscaggin, C. Bandle, F. V. Atkinson, G. Feltrin, H. Amann, H. Amann, H. Berestycki, H. Berestycki, J. Mawhin, Maurizio Garrione, P. H. Rabinowitz, P. Hess, S. Alama   +16 more
core   +1 more source

Bifurcation of positive and negative solutions of nonlinearizable Sturm-Liouville problems with indefinite weight

, 2020
We consider nonlinearizable Sturm-Liouville problem indefinite weight function. We show the existence of two pairs of global continua emanating from the bifurcation intervals surrounding the principal eigenvalues of the corresponding linear problem and ...
Z. Aliyev, Leyla Nasirova
semanticscholar   +1 more source

𝑝(𝑥)-Laplacian with indefinite weight [PDF]

Proceedings of the American Mathematical Society, 2011
We consider the eigenvalue problem − div ( | ∇ u | p ( x ) − 2 ∇ u )
openaire   +1 more source

Magnetoelectric Nanotherapy Achieves Complete Tumor Ablation and Prolonged Survival in Pancreatic Cancer Murine Models

Advanced Science, EarlyView.
Magnetoelectric nanoparticles (MENPs) serve as externally controlled, MRI‐activated theranostic agents for targeted cancer therapy by inducing electric field‐based ablation in solid tumors. MENPs enable simultaneous precise tumor ablation and MRI signal modulation, allowing real‐time treatment monitoring and prediction of therapeutic outcomes with no ...
John Michael Bryant, Max Shotbolt, Emmanuel Stimphil, Victoria Andre, Elric Zhang, Veronica Estrella, Kazim Husain, Joseph Weygand, Doug Marchion, Alex Sebastian Lopez, Dominique Abrahams, Shawnus Chen, Mostafa Abdel‐Mottaleb, Skye Conlan, Ibrahim Oraiqat, Vaseem Khatri, Jose Alejandro Guevara, Shari Pilon‐Thomas, Gage Redler, Kujtim Latifi, Natarajan Raghunand, Kosj Yamoah, Sarah Hoffe, James Costello, Jessica M. Frakes, Ping Liang, Robert A. Gatenby, Mokenge Malafa, Sakhrat Khizroev   +28 more
wiley   +1 more source