Exploring conversation laws and nonlinear dynamics of the unstable nonlinear Schrödinger equation: Stability and applications by Muhammad Arshad, Muhammad Attar Umer, Changjin Xu, Abdulrahman A. Almehizia, Faisal Yasin

Subjects: “…Unstable nonlinear Schrödinger equation…”
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Nonlinear connections and spinor geometry by Sergiu I. Vacaru, Nadejda A. Vicol

“…We present an introduction to the geometry of higher-order vector and covector bundles (including higher-order generalizations of the Finsler geometry and Kaluza-Klein gravity) and review the basic results on Clifford and spinor structures on spaces with generic local anisotropy modeled by anholonomic frames with associated nonlinear connection structures. We emphasize strong arguments for application of Finsler-like geometries in modern string and gravity theory, noncommutative geometry and noncommutative field theory, and gravity.…”
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Topology in nonlinear extensions of hypernumbers by M. S. Burgin

“…In this paper, nonlinear structures are introduced in spaces of real and complex hypernumbers by extending the concept of a hypernumber. …”
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Some Nonlinear Vortex Solutions by Michael C. Haslam, Christopher J. Smith, Ghada Alobaidi, Roland Mallier

“…We consider the steady-state two-dimensional motion of an inviscid incompressible fluid which obeys a nonlinear Poisson equation. By seeking solutions of a specific form, we arrive at some interesting new nonlinear vortex solutions.…”
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Linear and Nonlinear Matrix Equations by Masoud Hajarian, Qing-Wen Wang, Vejdi I. Hasanov

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Nonlinear structures of the stochastic maxima by Algimantas Aksomaitis, Robertas Vilkas

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Nonlinear memristive computational spectrometer by Xin Li, Jie Wang, Feilong Yu, Jin Chen, Xiaoshuang Chen, Wei Lu, Guanhai Li

“…Here, we introduce a computational spectrometer powered by a nonlinear photonic memristor with a WSe2 homojunction. …”
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Some Remarks on Nonlinear Electrodynamics by Patricio Gaete

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Nonlinear semelparous Leslie models by J. M. Cushing

Subjects: “…nonlinear matrix models…”
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The problem of synthesis in nonlinear systems by Genovaitė Zaksienė

“… Nonlinear systems with unknown stiffness characteristics are investigated when periodic solutions are fixed. …”
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Nonlinear Vibration of Continuous Systems by Francesco Pellicano, Matteo Strozzi, Konstantin V. Avramov

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A Modified Lindstedt–Poincaré Method for a Strongly Nonlinear System with Quadratic and Cubic Nonlinearities by S.H. Chen, Y. K. Cheung

“…A modified Lindstedt–Poincaré method is presented for extending the range of the validity of perturbation expansion to strongly nonlinear oscillations of a system with quadratic and cubic nonlinearities. …”
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Optimal and Nonlinear Dynamic Countermeasure under a Node-Level Model with Nonlinear Infection Rate by Xulong Zhang, Chenquan Gan

“…To this end, a controlled node-level model with nonlinear infection and countermeasure rates is established. …”
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Assessment of dynamics of asynchronous drive by nonlinear transfer function. Correction of nonlinearity of asynchronous electric drive by A. A. Baldenkov, V. L. Kodkin, A. S. Anikin

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Investigation of the Equivalent Representation Form of Strongly Damped Nonlinear Oscillators by a Nonlinear Transformation Approach by Alex Elías-Zúñiga, Oscar Martínez-Romero

“…We use a nonlinear transformation method to develop equivalent equations of motion of nonlinear homogeneous oscillatory systems with linear and nonlinear odd damping terms. …”
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Application of modified extended direct algebraic method to nonlinear fractional diffusion reaction equation with cubic nonlinearity by Muhammad Bilal, Alamgir Khan, Ikram Ullah, Hasib Khan, Jehad Alzabut, Hisham Mohammad Alkhawar

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Existence of Positive Solutions to Nonlinear Fractional Boundary Value Problem with Changing Sign Nonlinearity and Advanced Arguments by Zhaocai Hao, Yubo Huang

“…Our analysis relies on a nonlinear alternative of Leray-Schauder type. An example is given to illustrate our results.…”
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A New Topological Degree Theory for Perturbations of Demicontinuous Operators and Applications to Nonlinear Equations with Nonmonotone Nonlinearities by Teffera M. Asfaw

“…In addition, a new existence result is given concerning existence of weak solutions for nonlinear wave equation with nonmonotone nonlinearity.…”
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Existence and Uniqueness of Positive Solutions to Nonlinear Second Order Impulsive Differential Equations with Concave or Convex Nonlinearities by Lingling Zhang, Chengbo Zhai

“…Using a new fixed point theorem of generalized concave operators, we present in this paper criteria which guarantee the existence and uniqueness of positive solutions to nonlinear two-point boundary value problems for second-order impulsive differential equations with concave or convex nonlinearities.…”
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Use of a Strongly Nonlinear Gambier Equation for the Construction of Exact Closed Form Solutions of Nonlinear ODEs by M. P. Markakis

“…This treatment is applied to another nonlinear equation, subjected to the same general class as that of Gambier, by constructing step by step an appropriate analytical technique. …”
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