Results 11 to 20 of about 81,012 (245)
The relativistic uniform model: the metric of the covariant theory of gravitation inside a body
St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021 In the paper, it has been established that the sum of stress-energy tensors of the electromagnetic and gravitational fields, the acceleration and the pressure ones inside a stationary uniform spherical body vanishes within the framework of relativistic ...
Fedosin Sergey
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Advances in Difference Equations, 2021 This paper is concerned with description of the existence and the forms of entire solutions of several second-order partial differential-difference equations with more general forms of Fermat type.
Hong Yan Xu +3 more
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Calculation of compelled fluctuations of panel buildings [PDF]
E3S Web of Conferences, 2023 The article discusses the dynamic calculation of the elements of the box structure of buildings under the action of seismic effects, taking into account the spatial work of the box elements, given by the displacement of their lower part according to a ...
Usarov Makhamatali +2 more
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Functional differential equations—a reciprocity principle
International Journal of Mathematics and Mathematical Sciences, 1986 The functional differential equations proposed for solution here are mainly ordinary differential equations with fairly general argument deviations. Included among them are equations with involutions and some with reflections of the argument.
Lloyd K. Williams
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Weak solutions of unconditionally stable second-order difference schemes for nonlinear sine-Gordon systems [PDF]
E-Journal of Analysis and Applied MathematicsThis paper presents the existence and uniqueness of the weak solution for the nonlinear system of sine-Gordon equations which describes DNA dynamics.
Ozgur Yildirim
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S-Almost Automorphic Solutions for Impulsive Evolution Equations on Time Scales in Shift Operators
Mathematics, 2020 In this paper, based on the concept of complete-closed time scales attached with shift direction under non-translational shifts (or S-CCTS for short), as a first attempt, we develop the concepts of S-equipotentially almost automorphic sequences ...
Chao Wang +2 more
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Covariant color-kinematics duality
Journal of High Energy Physics, 2021 We show that color-kinematics duality is a manifest property of the equations of motion governing currents and field strengths. For the nonlinear sigma model (NLSM), this insight enables an implementation of the double copy at the level of fields, as ...
Clifford Cheung, James Mangan
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MathematicsThis paper investigates the quasi-synchronization (QS) problem for drive-response discrete-time delayed inertial neural networks (DTDINNS). Unlike existing studies that mainly rely on classical stability theorems, linear matrix inequality (LMI) methods ...
Zheng Zhou, Zhen Yang, Zhengqiu Zhang
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Determination of the number of radicals in the initial chain reactions by mathematical methods [PDF]
Hemijska Industrija, 2009 Starting from the fact that the real mechanism in a chemical equation takes places through a certain number of radicals which participate in simultaneous reactions and initiate chain reactions according to a particular pattern, the aim of this study is ...
Pejović Branko B. +4 more
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Spectral and oscillation theory for general second order Sturm-Liouville difference equations [PDF]
Advances in Difference Equations, 2012 Abstract In this article we establish an oscillation theorem for second order Sturm-Liouville difference equations with general nonlinear dependence on the spectral parameter λ. This nonlinear dependence on λ is allowed both in the leading coefficient and in the potential. We extend the traditional notions of eigenvalues and eigenfunctions to
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