Results 81 to 90 of about 54,909 (322)

Monotone iterative solutions for a coupled system of p-Laplacian differential equations involving the Riemann–Liouville fractional derivative

open access: yesAdvances in Difference Equations, 2021
Applying the monotone iterative technique and the method of upper and lower solutions, we investigate the existence of extremal solutions for a nonlinear system of p-Laplacian differential equations with nonlocal coupled integral boundary conditions.
Bo Bi, Ying He
doaj   +1 more source

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

open access: yesAdvanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source

Positive Solutions of a Nonlinear Parabolic Partial Differential Equation

open access: yesAbstract and Applied Analysis, 2014
We deal with the existence and uniqueness of positive solutions to a class of nonlinear parabolic partial differential equations, by using some fixed point theorems for mixed monotone operators with perturbation.
Chengbo Zhai, Shunyong Li
doaj   +1 more source

Periodic solutions of nonlinear wave equations with general nonlinearities

open access: yes, 2002
We prove the existence of small amplitude periodic solutions, with strongly irrational frequency $ \om $ close to one, for completely resonant nonlinear wave equations. We provide multiplicity results for both monotone and nonmonotone nonlinearities. For
Berti, Massimiliano, Bolle, Philippe
core   +1 more source

Directional Flow of Confined Polaritons in CrSBr

open access: yesAdvanced Materials, EarlyView.
CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak   +10 more
wiley   +1 more source

A new projection-based algorithm for solving a large-scale nonlinear system of monotone equations

open access: yesCroatian Operational Research Review, 2018
Projection-based methods are an efficient and applicable family of derivative free methods for solving nonlinear monotone systems. This paper proposes a new projection method for solving a system of large-scale nonlinear monotone equations.
Mushtak A. K. Shiker, Keyvan Amini
doaj   +1 more source

Controllability for nonlinear evolution equations with monotone operators [PDF]

open access: yesJournal of Inequalities and Applications, 2013
Abstract In this paper, we investigate the approximate controllability for nonlinear evolution equations with monotone operators and nonlinear controllers according to monotone operator theory. We also give the regularity for the nonlinear equation. Finally, an example, to which our main result can be applied, is given.
Kang, Yong   +2 more
openaire   +1 more source

Ion‐Reconfigurable “N”‐Shaped Antiambipolar Behavior in Organic Electrochemical Transistors

open access: yesAdvanced Materials, EarlyView.
A unique N‐shaped negative differential transconductance (NDT) characteristics is demonstrated in single‐polymer organic electrochemical transistors through a sequential doping–redox–doping process driven by iodide ions. This redox‐driven mechanism enables low‐voltage, ion‐controlled reconfigurability and tunable current modulation, allowing seamless ...
Debdatta Panigrahi   +11 more
wiley   +1 more source

NOTE: Monotone Iterative Technique for a Nonlinear Integral Equation

open access: yesJournal of Mathematical Analysis and Applications, 1997
The monotone iterative technique is used to prove the existence of positive solutions to nonlinear integral equations of Volterra type. In a special case the author proves the uniqueness of the solution.
openaire   +1 more source

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